ttyread: test for EOF while reading tty

[st.git] / st.c
diff --git a/st.c b/st.c

index d6fe58a..81973ee 100644 (file)
--- a/st.c
+++ b/st.c
@@ -3,40 +3,22 @@
  #include <errno.h>
  #include <fcntl.h>
  #include <limits.h>
  #include <errno.h>
  #include <fcntl.h>
  #include <limits.h>
-#include <locale.h>
  #include <pwd.h>
  #include <stdarg.h>
  #include <stdio.h>
  #include <stdlib.h>
  #include <string.h>
  #include <signal.h>
  #include <pwd.h>
  #include <stdarg.h>
  #include <stdio.h>
  #include <stdlib.h>
  #include <string.h>
  #include <signal.h>
-#include <stdint.h>
  #include <sys/ioctl.h>
  #include <sys/select.h>
  #include <sys/ioctl.h>
  #include <sys/select.h>
-#include <sys/stat.h>
-#include <sys/time.h>
  #include <sys/types.h>
  #include <sys/wait.h>
  #include <termios.h>
  #include <sys/types.h>
  #include <sys/wait.h>
  #include <termios.h>
-#include <time.h>
  #include <unistd.h>
  #include <unistd.h>
-#include <libgen.h>
-#include <X11/Xatom.h>
-#include <X11/Xlib.h>
-#include <X11/Xutil.h>
-#include <X11/cursorfont.h>
-#include <X11/keysym.h>
-#include <X11/Xft/Xft.h>
-#include <X11/XKBlib.h>
-#include <fontconfig/fontconfig.h>
  #include <wchar.h>
  
  #include <wchar.h>
  
-#include "arg.h"
-
-char *argv0;
-
-#define Glyph Glyph_
-#define Font Font_
+#include "st.h"
+#include "win.h"
  
  #if   defined(__linux)
   #include <pty.h>
  
  #if   defined(__linux)
   #include <pty.h>
@@ -46,11 +28,6 @@ char *argv0;
   #include <libutil.h>
  #endif
  
   #include <libutil.h>
  #endif
  
-
-/* XEMBED messages */
-#define XEMBED_FOCUS_IN  4
-#define XEMBED_FOCUS_OUT 5
-
  /* Arbitrary sizes */
  #define UTF_INVALID   0xFFFD
  #define UTF_SIZ       4
  /* Arbitrary sizes */
  #define UTF_INVALID   0xFFFD
  #define UTF_SIZ       4
@@ -58,53 +35,23 @@ char *argv0;
  #define ESC_ARG_SIZ   16
  #define STR_BUF_SIZ   ESC_BUF_SIZ
  #define STR_ARG_SIZ   ESC_ARG_SIZ
  #define ESC_ARG_SIZ   16
  #define STR_BUF_SIZ   ESC_BUF_SIZ
  #define STR_ARG_SIZ   ESC_ARG_SIZ
-#define XK_ANY_MOD    UINT_MAX
-#define XK_NO_MOD     0
-#define XK_SWITCH_MOD (1<<13)
  
  /* macros */
  
  /* macros */
-#define MIN(a, b)              ((a) < (b) ? (a) : (b))
-#define MAX(a, b)              ((a) < (b) ? (b) : (a))
-#define LEN(a)                 (sizeof(a) / sizeof(a)[0])
-#define NUMMAXLEN(x)           ((int)(sizeof(x) * 2.56 + 0.5) + 1)
-#define DEFAULT(a, b)          (a) = (a) ? (a) : (b)
-#define BETWEEN(x, a, b)       ((a) <= (x) && (x) <= (b))
-#define DIVCEIL(n, d)          (((n) + ((d) - 1)) / (d))
+#define IS_SET(flag)           ((term.mode & (flag)) != 0)
  #define ISCONTROLC0(c)         (BETWEEN(c, 0, 0x1f) || (c) == '\177')
  #define ISCONTROLC1(c)         (BETWEEN(c, 0x80, 0x9f))
  #define ISCONTROL(c)           (ISCONTROLC0(c) || ISCONTROLC1(c))
  #define ISCONTROLC0(c)         (BETWEEN(c, 0, 0x1f) || (c) == '\177')
  #define ISCONTROLC1(c)         (BETWEEN(c, 0x80, 0x9f))
  #define ISCONTROL(c)           (ISCONTROLC0(c) || ISCONTROLC1(c))
-#define ISDELIM(u)             (utf8strchr(worddelimiters, u) != NULL)
-#define LIMIT(x, a, b)         (x) = (x) < (a) ? (a) : (x) > (b) ? (b) : (x)
-#define ATTRCMP(a, b)          ((a).mode != (b).mode || (a).fg != (b).fg || \
-                               (a).bg != (b).bg)
-#define IS_SET(flag)           ((term.mode & (flag)) != 0)
-#define TIMEDIFF(t1, t2)       ((t1.tv_sec-t2.tv_sec)*1000 + \
-                               (t1.tv_nsec-t2.tv_nsec)/1E6)
-#define MODBIT(x, set, bit)    ((set) ? ((x) |= (bit)) : ((x) &= ~(bit)))
-
-#define TRUECOLOR(r,g,b)       (1 << 24 | (r) << 16 | (g) << 8 | (b))
-#define IS_TRUECOL(x)          (1 << 24 & (x))
-#define TRUERED(x)             (((x) & 0xff0000) >> 8)
-#define TRUEGREEN(x)           (((x) & 0xff00))
-#define TRUEBLUE(x)            (((x) & 0xff) << 8)
-
-/* constants */
-#define ISO14755CMD            "dmenu -w %lu -p codepoint: </dev/null"
-
-enum glyph_attribute {
-       ATTR_NULL       = 0,
-       ATTR_BOLD       = 1 << 0,
-       ATTR_FAINT      = 1 << 1,
-       ATTR_ITALIC     = 1 << 2,
-       ATTR_UNDERLINE  = 1 << 3,
-       ATTR_BLINK      = 1 << 4,
-       ATTR_REVERSE    = 1 << 5,
-       ATTR_INVISIBLE  = 1 << 6,
-       ATTR_STRUCK     = 1 << 7,
-       ATTR_WRAP       = 1 << 8,
-       ATTR_WIDE       = 1 << 9,
-       ATTR_WDUMMY     = 1 << 10,
-       ATTR_BOLD_FAINT = ATTR_BOLD | ATTR_FAINT,
+#define ISDELIM(u)             (u && wcschr(worddelimiters, u))
+
+enum term_mode {
+       MODE_WRAP        = 1 << 0,
+       MODE_INSERT      = 1 << 1,
+       MODE_ALTSCREEN   = 1 << 2,
+       MODE_CRLF        = 1 << 3,
+       MODE_ECHO        = 1 << 4,
+       MODE_PRINT       = 1 << 5,
+       MODE_UTF8        = 1 << 6,
+       MODE_SIXEL       = 1 << 7,
  };
  
  enum cursor_movement {
  };
  
  enum cursor_movement {
@@ -118,34 +65,6 @@ enum cursor_state {
         CURSOR_ORIGIN   = 2
  };
  
         CURSOR_ORIGIN   = 2
  };
  
-enum term_mode {
-       MODE_WRAP        = 1 << 0,
-       MODE_INSERT      = 1 << 1,
-       MODE_APPKEYPAD   = 1 << 2,
-       MODE_ALTSCREEN   = 1 << 3,
-       MODE_CRLF        = 1 << 4,
-       MODE_MOUSEBTN    = 1 << 5,
-       MODE_MOUSEMOTION = 1 << 6,
-       MODE_REVERSE     = 1 << 7,
-       MODE_KBDLOCK     = 1 << 8,
-       MODE_HIDE        = 1 << 9,
-       MODE_ECHO        = 1 << 10,
-       MODE_APPCURSOR   = 1 << 11,
-       MODE_MOUSESGR    = 1 << 12,
-       MODE_8BIT        = 1 << 13,
-       MODE_BLINK       = 1 << 14,
-       MODE_FBLINK      = 1 << 15,
-       MODE_FOCUS       = 1 << 16,
-       MODE_MOUSEX10    = 1 << 17,
-       MODE_MOUSEMANY   = 1 << 18,
-       MODE_BRCKTPASTE  = 1 << 19,
-       MODE_PRINT       = 1 << 20,
-       MODE_UTF8        = 1 << 21,
-       MODE_SIXEL       = 1 << 22,
-       MODE_MOUSE       = MODE_MOUSEBTN|MODE_MOUSEMOTION|MODE_MOUSEX10\
-                         |MODE_MOUSEMANY,
-};
-
  enum charset {
         CS_GRAPHIC0,
         CS_GRAPHIC1,
  enum charset {
         CS_GRAPHIC0,
         CS_GRAPHIC1,
@@ -167,46 +86,6 @@ enum escape_state {
         ESC_DCS        =128,
  };
  
         ESC_DCS        =128,
  };
  
-enum window_state {
-       WIN_VISIBLE = 1,
-       WIN_FOCUSED = 2
-};
-
-enum selection_mode {
-       SEL_IDLE = 0,
-       SEL_EMPTY = 1,
-       SEL_READY = 2
-};
-
-enum selection_type {
-       SEL_REGULAR = 1,
-       SEL_RECTANGULAR = 2
-};
-
-enum selection_snap {
-       SNAP_WORD = 1,
-       SNAP_LINE = 2
-};
-
-typedef unsigned char uchar;
-typedef unsigned int uint;
-typedef unsigned long ulong;
-typedef unsigned short ushort;
-
-typedef uint_least32_t Rune;
-
-typedef XftDraw *Draw;
-typedef XftColor Color;
-
-typedef struct {
-       Rune u;           /* character code */
-       ushort mode;      /* attribute flags */
-       uint32_t fg;      /* foreground  */
-       uint32_t bg;      /* background  */
-} Glyph;
-
-typedef Glyph *Line;
-
  typedef struct {
         Glyph attr; /* current char attributes */
         int x;
  typedef struct {
         Glyph attr; /* current char attributes */
         int x;
@@ -214,26 +93,23 @@ typedef struct {
         char state;
  } TCursor;
  
         char state;
  } TCursor;
  
-/* CSI Escape sequence structs */
-/* ESC '[' [[ [<priv>] <arg> [;]] <mode> [<mode>]] */
  typedef struct {
  typedef struct {
-       char buf[ESC_BUF_SIZ]; /* raw string */
-       int len;               /* raw string length */
-       char priv;
-       int arg[ESC_ARG_SIZ];
-       int narg;              /* nb of args */
-       char mode[2];
-} CSIEscape;
+       int mode;
+       int type;
+       int snap;
+       /*
+        * Selection variables:
+        * nb – normalized coordinates of the beginning of the selection
+        * ne – normalized coordinates of the end of the selection
+        * ob – original coordinates of the beginning of the selection
+        * oe – original coordinates of the end of the selection
+        */
+       struct {
+               int x, y;
+       } nb, ne, ob, oe;
  
  
-/* STR Escape sequence structs */
-/* ESC type [[ [<priv>] <arg> [;]] <mode>] ESC '\' */
-typedef struct {
-       char type;             /* ESC type ... */
-       char buf[STR_BUF_SIZ]; /* raw string */
-       int len;               /* raw string length */
-       char *args[STR_ARG_SIZ];
-       int narg;              /* nb of args */
-} STREscape;
+       int alt;
+} Selection;
  
  /* Internal representation of the screen */
  typedef struct {
  
  /* Internal representation of the screen */
  typedef struct {
@@ -241,9 +117,10 @@ typedef struct {
         int col;      /* nb col */
         Line *line;   /* screen */
         Line *alt;    /* alternate screen */
         int col;      /* nb col */
         Line *line;   /* screen */
         Line *alt;    /* alternate screen */
-       int *dirty;  /* dirtyness of lines */
-       XftGlyphFontSpec *specbuf; /* font spec buffer used for rendering */
+       int *dirty;   /* dirtyness of lines */
         TCursor c;    /* cursor */
         TCursor c;    /* cursor */
+       int ocx;      /* old cursor col */
+       int ocy;      /* old cursor row */
         int top;      /* top    scroll limit */
         int bot;      /* bottom scroll limit */
         int mode;     /* terminal mode flags */
         int top;      /* top    scroll limit */
         int bot;      /* bottom scroll limit */
         int mode;     /* terminal mode flags */
@@ -251,133 +128,35 @@ typedef struct {
         char trantbl[4]; /* charset table translation */
         int charset;  /* current charset */
         int icharset; /* selected charset for sequence */
         char trantbl[4]; /* charset table translation */
         int charset;  /* current charset */
         int icharset; /* selected charset for sequence */
-       int numlock; /* lock numbers in keyboard */
         int *tabs;
  } Term;
  
         int *tabs;
  } Term;
  
-/* Purely graphic info */
-typedef struct {
-       Display *dpy;
-       Colormap cmap;
-       Window win;
-       Drawable buf;
-       Atom xembed, wmdeletewin, netwmname, netwmpid;
-       XIM xim;
-       XIC xic;
-       Draw draw;
-       Visual *vis;
-       XSetWindowAttributes attrs;
-       int scr;
-       int isfixed; /* is fixed geometry? */
-       int l, t; /* left and top offset */
-       int gm; /* geometry mask */
-       int tw, th; /* tty width and height */
-       int w, h; /* window width and height */
-       int ch; /* char height */
-       int cw; /* char width  */
-       char state; /* focus, redraw, visible */
-       int cursor; /* cursor style */
-} XWindow;
-
-typedef struct {
-       uint b;
-       uint mask;
-       char *s;
-} MouseShortcut;
-
+/* CSI Escape sequence structs */
+/* ESC '[' [[ [<priv>] <arg> [;]] <mode> [<mode>]] */
  typedef struct {
  typedef struct {
-       KeySym k;
-       uint mask;
-       char *s;
-       /* three valued logic variables: 0 indifferent, 1 on, -1 off */
-       signed char appkey;    /* application keypad */
-       signed char appcursor; /* application cursor */
-       signed char crlf;      /* crlf mode          */
-} Key;
+       char buf[ESC_BUF_SIZ]; /* raw string */
+       size_t len;            /* raw string length */
+       char priv;
+       int arg[ESC_ARG_SIZ];
+       int narg;              /* nb of args */
+       char mode[2];
+} CSIEscape;
  
  
+/* STR Escape sequence structs */
+/* ESC type [[ [<priv>] <arg> [;]] <mode>] ESC '\' */
  typedef struct {
  typedef struct {
-       int mode;
-       int type;
-       int snap;
-       /*
-        * Selection variables:
-        * nb – normalized coordinates of the beginning of the selection
-        * ne – normalized coordinates of the end of the selection
-        * ob – original coordinates of the beginning of the selection
-        * oe – original coordinates of the end of the selection
-        */
-       struct {
-               int x, y;
-       } nb, ne, ob, oe;
-
-       char *primary, *clipboard;
-       Atom xtarget;
-       int alt;
-       struct timespec tclick1;
-       struct timespec tclick2;
-} Selection;
-
-typedef union {
-       int i;
-       uint ui;
-       float f;
-       const void *v;
-} Arg;
+       char type;             /* ESC type ... */
+       char *buf;             /* allocated raw string */
+       size_t siz;            /* allocation size */
+       size_t len;            /* raw string length */
+       char *args[STR_ARG_SIZ];
+       int narg;              /* nb of args */
+} STREscape;
  
  
-typedef struct {
-       uint mod;
-       KeySym keysym;
-       void (*func)(const Arg *);
-       const Arg arg;
-} Shortcut;
-
-/* function definitions used in config.h */
-static void clipcopy(const Arg *);
-static void clippaste(const Arg *);
-static void numlock(const Arg *);
-static void selpaste(const Arg *);
-static void xzoom(const Arg *);
-static void xzoomabs(const Arg *);
-static void xzoomreset(const Arg *);
-static void printsel(const Arg *);
-static void printscreen(const Arg *) ;
-static void iso14755(const Arg *);
-static void toggleprinter(const Arg *);
-static void sendbreak(const Arg *);
-
-/* Config.h for applying patches and the configuration. */
-#include "config.h"
-
-/* Font structure */
-typedef struct {
-       int height;
-       int width;
-       int ascent;
-       int descent;
-       int badslant;
-       int badweight;
-       short lbearing;
-       short rbearing;
-       XftFont *match;
-       FcFontSet *set;
-       FcPattern *pattern;
-} Font;
-
-/* Drawing Context */
-typedef struct {
-       Color col[MAX(LEN(colorname), 256)];
-       Font font, bfont, ifont, ibfont;
-       GC gc;
-} DC;
-
-static void die(const char *, ...);
-static void draw(void);
-static void redraw(void);
-static void drawregion(int, int, int, int);
-static void execsh(void);
-static void stty(void);
+static void execsh(char *, char **);
+static void stty(char **);
  static void sigchld(int);
  static void sigchld(int);
-static void run(void);
+static void ttywriteraw(const char *, size_t);
  
  static void csidump(void);
  static void csihandle(void);
  
  static void csidump(void);
  static void csihandle(void);
@@ -389,7 +168,6 @@ static void strhandle(void);
  static void strparse(void);
  static void strreset(void);
  
  static void strparse(void);
  static void strreset(void);
  
-static int tattrset(int);
  static void tprinter(char *, size_t);
  static void tdumpsel(void);
  static void tdumpline(int);
  static void tprinter(char *, size_t);
  static void tdumpsel(void);
  static void tdumpline(int);
@@ -403,174 +181,57 @@ static void tinsertblankline(int);
  static int tlinelen(int);
  static void tmoveto(int, int);
  static void tmoveato(int, int);
  static int tlinelen(int);
  static void tmoveto(int, int);
  static void tmoveato(int, int);
-static void tnew(int, int);
  static void tnewline(int);
  static void tputtab(int);
  static void tputc(Rune);
  static void treset(void);
  static void tnewline(int);
  static void tputtab(int);
  static void tputc(Rune);
  static void treset(void);
-static void tresize(int, int);
  static void tscrollup(int, int);
  static void tscrolldown(int, int);
  static void tsetattr(int *, int);
  static void tsetchar(Rune, Glyph *, int, int);
  static void tscrollup(int, int);
  static void tscrolldown(int, int);
  static void tsetattr(int *, int);
  static void tsetchar(Rune, Glyph *, int, int);
+static void tsetdirt(int, int);
  static void tsetscroll(int, int);
  static void tswapscreen(void);
  static void tsetscroll(int, int);
  static void tswapscreen(void);
-static void tsetdirt(int, int);
-static void tsetdirtattr(int);
  static void tsetmode(int, int, int *, int);
  static void tsetmode(int, int, int *, int);
+static int twrite(const char *, int, int);
  static void tfulldirt(void);
  static void tfulldirt(void);
-static void techo(Rune);
  static void tcontrolcode(uchar );
  static void tdectest(char );
  static void tdefutf8(char);
  static int32_t tdefcolor(int *, int *, int);
  static void tdeftran(char);
  static void tcontrolcode(uchar );
  static void tdectest(char );
  static void tdefutf8(char);
  static int32_t tdefcolor(int *, int *, int);
  static void tdeftran(char);
-static inline int match(uint, uint);
-static void ttynew(void);
-static size_t ttyread(void);
-static void ttyresize(void);
-static void ttysend(char *, size_t);
-static void ttywrite(const char *, size_t);
  static void tstrsequence(uchar);
  
  static void tstrsequence(uchar);
  
-static inline ushort sixd_to_16bit(int);
-static int xmakeglyphfontspecs(XftGlyphFontSpec *, const Glyph *, int, int, int);
-static void xdrawglyphfontspecs(const XftGlyphFontSpec *, Glyph, int, int, int);
-static void xdrawglyph(Glyph, int, int);
-static void xhints(void);
-static void xclear(int, int, int, int);
-static void xdrawcursor(void);
-static void xinit(void);
-static void xloadcols(void);
-static int xsetcolorname(int, const char *);
-static int xgeommasktogravity(int);
-static int xloadfont(Font *, FcPattern *);
-static void xloadfonts(char *, double);
-static void xsettitle(char *);
-static void xresettitle(void);
-static void xsetpointermotion(int);
-static void xseturgency(int);
-static void xsetsel(char *, Time);
-static void xunloadfont(Font *);
-static void xunloadfonts(void);
-static void xresize(int, int);
-
-static void expose(XEvent *);
-static void visibility(XEvent *);
-static void unmap(XEvent *);
-static char *kmap(KeySym, uint);
-static void kpress(XEvent *);
-static void cmessage(XEvent *);
-static void cresize(int, int);
-static void resize(XEvent *);
-static void focus(XEvent *);
-static void brelease(XEvent *);
-static void bpress(XEvent *);
-static void bmotion(XEvent *);
-static void propnotify(XEvent *);
-static void selnotify(XEvent *);
-static void selclear(XEvent *);
-static void selrequest(XEvent *);
-
-static void selinit(void);
+static void drawregion(int, int, int, int);
+
  static void selnormalize(void);
  static void selnormalize(void);
-static inline int selected(int, int);
-static char *getsel(void);
-static void selcopy(Time);
  static void selscroll(int, int);
  static void selsnap(int *, int *, int);
  static void selscroll(int, int);
  static void selsnap(int *, int *, int);
-static int x2col(int);
-static int y2row(int);
-static void getbuttoninfo(XEvent *);
-static void mousereport(XEvent *);
  
  
-static size_t utf8decode(char *, Rune *, size_t);
+static size_t utf8decode(const char *, Rune *, size_t);
  static Rune utf8decodebyte(char, size_t *);
  static Rune utf8decodebyte(char, size_t *);
-static size_t utf8encode(Rune, char *);
  static char utf8encodebyte(Rune, size_t);
  static char utf8encodebyte(Rune, size_t);
-static char *utf8strchr(char *s, Rune u);
  static size_t utf8validate(Rune *, size_t);
  
  static size_t utf8validate(Rune *, size_t);
  
+static char *base64dec(const char *);
+static char base64dec_getc(const char **);
+
  static ssize_t xwrite(int, const char *, size_t);
  static ssize_t xwrite(int, const char *, size_t);
-static void *xmalloc(size_t);
-static void *xrealloc(void *, size_t);
-static char *xstrdup(char *);
-
-static void usage(void);
-
-static void (*handler[LASTEvent])(XEvent *) = {
-       [KeyPress] = kpress,
-       [ClientMessage] = cmessage,
-       [ConfigureNotify] = resize,
-       [VisibilityNotify] = visibility,
-       [UnmapNotify] = unmap,
-       [Expose] = expose,
-       [FocusIn] = focus,
-       [FocusOut] = focus,
-       [MotionNotify] = bmotion,
-       [ButtonPress] = bpress,
-       [ButtonRelease] = brelease,
-/*
- * Uncomment if you want the selection to disappear when you select something
- * different in another window.
- */
-/*     [SelectionClear] = selclear, */
-       [SelectionNotify] = selnotify,
-/*
- * PropertyNotify is only turned on when there is some INCR transfer happening
- * for the selection retrieval.
- */
-       [PropertyNotify] = propnotify,
-       [SelectionRequest] = selrequest,
-};
  
  /* Globals */
  
  /* Globals */
-static DC dc;
-static XWindow xw;
  static Term term;
  static Term term;
+static Selection sel;
  static CSIEscape csiescseq;
  static STREscape strescseq;
  static CSIEscape csiescseq;
  static STREscape strescseq;
+static int iofd = 1;
  static int cmdfd;
  static pid_t pid;
  static int cmdfd;
  static pid_t pid;
-static Selection sel;
-static int iofd = 1;
-static char **opt_cmd  = NULL;
-static char *opt_class = NULL;
-static char *opt_embed = NULL;
-static char *opt_font  = NULL;
-static char *opt_io    = NULL;
-static char *opt_line  = NULL;
-static char *opt_name  = NULL;
-static char *opt_title = NULL;
-static int oldbutton   = 3; /* button event on startup: 3 = release */
-
-static char *usedfont = NULL;
-static double usedfontsize = 0;
-static double defaultfontsize = 0;
  
  static uchar utfbyte[UTF_SIZ + 1] = {0x80,    0, 0xC0, 0xE0, 0xF0};
  static uchar utfmask[UTF_SIZ + 1] = {0xC0, 0x80, 0xE0, 0xF0, 0xF8};
  static Rune utfmin[UTF_SIZ + 1] = {       0,    0,  0x80,  0x800,  0x10000};
  static Rune utfmax[UTF_SIZ + 1] = {0x10FFFF, 0x7F, 0x7FF, 0xFFFF, 0x10FFFF};
  
  
  static uchar utfbyte[UTF_SIZ + 1] = {0x80,    0, 0xC0, 0xE0, 0xF0};
  static uchar utfmask[UTF_SIZ + 1] = {0xC0, 0x80, 0xE0, 0xF0, 0xF8};
  static Rune utfmin[UTF_SIZ + 1] = {       0,    0,  0x80,  0x800,  0x10000};
  static Rune utfmax[UTF_SIZ + 1] = {0x10FFFF, 0x7F, 0x7FF, 0xFFFF, 0x10FFFF};
  
-/* Font Ring Cache */
-enum {
-       FRC_NORMAL,
-       FRC_ITALIC,
-       FRC_BOLD,
-       FRC_ITALICBOLD
-};
-
-typedef struct {
-       XftFont *font;
-       int flags;
-       Rune unicodep;
-} Fontcache;
-
-/* Fontcache is an array now. A new font will be appended to the array. */
-static Fontcache frc[16];
-static int frclen = 0;
-
  ssize_t
  xwrite(int fd, const char *s, size_t len)
  {
  ssize_t
  xwrite(int fd, const char *s, size_t len)
  {
@@ -591,10 +252,10 @@ xwrite(int fd, const char *s, size_t len)
  void *
  xmalloc(size_t len)
  {
  void *
  xmalloc(size_t len)
  {
-       void *p = malloc(len);
+       void *p;
  
  
-       if (!p)
-               die("Out of memory\n");
+       if (!(p = malloc(len)))
+               die("malloc: %s\n", strerror(errno));
  
         return p;
  }
  
         return p;
  }
@@ -603,7 +264,7 @@ void *
  xrealloc(void *p, size_t len)
  {
         if ((p = realloc(p, len)) == NULL)
  xrealloc(void *p, size_t len)
  {
         if ((p = realloc(p, len)) == NULL)
-               die("Out of memory\n");
+               die("realloc: %s\n", strerror(errno));
  
         return p;
  }
  
         return p;
  }
@@ -612,13 +273,13 @@ char *
  xstrdup(char *s)
  {
         if ((s = strdup(s)) == NULL)
  xstrdup(char *s)
  {
         if ((s = strdup(s)) == NULL)
-               die("Out of memory\n");
+               die("strdup: %s\n", strerror(errno));
  
         return s;
  }
  
  size_t
  
         return s;
  }
  
  size_t
-utf8decode(char *c, Rune *u, size_t clen)
+utf8decode(const char *c, Rune *u, size_t clen)
  {
         size_t i, j, len, type;
         Rune udecoded;
  {
         size_t i, j, len, type;
         Rune udecoded;
@@ -676,23 +337,6 @@ utf8encodebyte(Rune u, size_t i)
         return utfbyte[i] | (u & ~utfmask[i]);
  }
  
         return utfbyte[i] | (u & ~utfmask[i]);
  }
  
-char *
-utf8strchr(char *s, Rune u)
-{
-       Rune r;
-       size_t i, j, len;
-
-       len = strlen(s);
-       for (i = 0, j = 0; i < len; i += j) {
-               if (!(j = utf8decode(&s[i], &r, len - i)))
-                       break;
-               if (r == u)
-                       return &(s[i]);
-       }
-
-       return NULL;
-}
-
  size_t
  utf8validate(Rune *u, size_t i)
  {
  size_t
  utf8validate(Rune *u, size_t i)
  {
@@ -704,37 +348,65 @@ utf8validate(Rune *u, size_t i)
         return i;
  }
  
         return i;
  }
  
-void
-selinit(void)
+static const char base64_digits[] = {
+       0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+       0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 62, 0, 0, 0,
+       63, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 0, 0, 0, -1, 0, 0, 0, 0, 1,
+       2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21,
+       22, 23, 24, 25, 0, 0, 0, 0, 0, 0, 26, 27, 28, 29, 30, 31, 32, 33, 34,
+       35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 0,
+       0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+       0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+       0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+       0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+       0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+       0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
+};
+
+char
+base64dec_getc(const char **src)
  {
  {
-       clock_gettime(CLOCK_MONOTONIC, &sel.tclick1);
-       clock_gettime(CLOCK_MONOTONIC, &sel.tclick2);
-       sel.mode = SEL_IDLE;
-       sel.snap = 0;
-       sel.ob.x = -1;
-       sel.primary = NULL;
-       sel.clipboard = NULL;
-       sel.xtarget = XInternAtom(xw.dpy, "UTF8_STRING", 0);
-       if (sel.xtarget == None)
-               sel.xtarget = XA_STRING;
+       while (**src && !isprint(**src)) (*src)++;
+       return **src ? *((*src)++) : '=';  /* emulate padding if string ends */
  }
  
  }
  
-int
-x2col(int x)
-{
-       x -= borderpx;
-       x /= xw.cw;
+char *
+base64dec(const char *src)
+{
+       size_t in_len = strlen(src);
+       char *result, *dst;
+
+       if (in_len % 4)
+               in_len += 4 - (in_len % 4);
+       result = dst = xmalloc(in_len / 4 * 3 + 1);
+       while (*src) {
+               int a = base64_digits[(unsigned char) base64dec_getc(&src)];
+               int b = base64_digits[(unsigned char) base64dec_getc(&src)];
+               int c = base64_digits[(unsigned char) base64dec_getc(&src)];
+               int d = base64_digits[(unsigned char) base64dec_getc(&src)];
+
+               /* invalid input. 'a' can be -1, e.g. if src is "\n" (c-str) */
+               if (a == -1 || b == -1)
+                       break;
  
  
-       return LIMIT(x, 0, term.col-1);
+               *dst++ = (a << 2) | ((b & 0x30) >> 4);
+               if (c == -1)
+                       break;
+               *dst++ = ((b & 0x0f) << 4) | ((c & 0x3c) >> 2);
+               if (d == -1)
+                       break;
+               *dst++ = ((c & 0x03) << 6) | d;
+       }
+       *dst = '\0';
+       return result;
  }
  
  }
  
-int
-y2row(int y)
+void
+selinit(void)
  {
  {
-       y -= borderpx;
-       y /= xw.ch;
-
-       return LIMIT(y, 0, term.row-1);
+       sel.mode = SEL_IDLE;
+       sel.snap = 0;
+       sel.ob.x = -1;
  }
  
  int
  }
  
  int
@@ -751,6 +423,52 @@ tlinelen(int y)
         return i;
  }
  
         return i;
  }
  
+void
+selstart(int col, int row, int snap)
+{
+       selclear();
+       sel.mode = SEL_EMPTY;
+       sel.type = SEL_REGULAR;
+       sel.alt = IS_SET(MODE_ALTSCREEN);
+       sel.snap = snap;
+       sel.oe.x = sel.ob.x = col;
+       sel.oe.y = sel.ob.y = row;
+       selnormalize();
+
+       if (sel.snap != 0)
+               sel.mode = SEL_READY;
+       tsetdirt(sel.nb.y, sel.ne.y);
+}
+
+void
+selextend(int col, int row, int type, int done)
+{
+       int oldey, oldex, oldsby, oldsey, oldtype;
+
+       if (sel.mode == SEL_IDLE)
+               return;
+       if (done && sel.mode == SEL_EMPTY) {
+               selclear();
+               return;
+       }
+
+       oldey = sel.oe.y;
+       oldex = sel.oe.x;
+       oldsby = sel.nb.y;
+       oldsey = sel.ne.y;
+       oldtype = sel.type;
+
+       sel.oe.x = col;
+       sel.oe.y = row;
+       selnormalize();
+       sel.type = type;
+
+       if (oldey != sel.oe.y || oldex != sel.oe.x || oldtype != sel.type || sel.mode == SEL_EMPTY)
+               tsetdirt(MIN(sel.nb.y, oldsby), MAX(sel.ne.y, oldsey));
+
+       sel.mode = done ? SEL_IDLE : SEL_READY;
+}
+
  void
  selnormalize(void)
  {
  void
  selnormalize(void)
  {
@@ -782,7 +500,8 @@ selnormalize(void)
  int
  selected(int x, int y)
  {
  int
  selected(int x, int y)
  {
-       if (sel.mode == SEL_EMPTY)
+       if (sel.mode == SEL_EMPTY || sel.ob.x == -1 ||
+                       sel.alt != IS_SET(MODE_ALTSCREEN))
                 return 0;
  
         if (sel.type == SEL_RECTANGULAR)
                 return 0;
  
         if (sel.type == SEL_RECTANGULAR)
@@ -867,141 +586,6 @@ selsnap(int *x, int *y, int direction)
         }
  }
  
         }
  }
  
-void
-getbuttoninfo(XEvent *e)
-{
-       int type;
-       uint state = e->xbutton.state & ~(Button1Mask | forceselmod);
-
-       sel.alt = IS_SET(MODE_ALTSCREEN);
-
-       sel.oe.x = x2col(e->xbutton.x);
-       sel.oe.y = y2row(e->xbutton.y);
-       selnormalize();
-
-       sel.type = SEL_REGULAR;
-       for (type = 1; type < LEN(selmasks); ++type) {
-               if (match(selmasks[type], state)) {
-                       sel.type = type;
-                       break;
-               }
-       }
-}
-
-void
-mousereport(XEvent *e)
-{
-       int x = x2col(e->xbutton.x), y = y2row(e->xbutton.y),
-           button = e->xbutton.button, state = e->xbutton.state,
-           len;
-       char buf[40];
-       static int ox, oy;
-
-       /* from urxvt */
-       if (e->xbutton.type == MotionNotify) {
-               if (x == ox && y == oy)
-                       return;
-               if (!IS_SET(MODE_MOUSEMOTION) && !IS_SET(MODE_MOUSEMANY))
-                       return;
-               /* MOUSE_MOTION: no reporting if no button is pressed */
-               if (IS_SET(MODE_MOUSEMOTION) && oldbutton == 3)
-                       return;
-
-               button = oldbutton + 32;
-               ox = x;
-               oy = y;
-       } else {
-               if (!IS_SET(MODE_MOUSESGR) && e->xbutton.type == ButtonRelease) {
-                       button = 3;
-               } else {
-                       button -= Button1;
-                       if (button >= 3)
-                               button += 64 - 3;
-               }
-               if (e->xbutton.type == ButtonPress) {
-                       oldbutton = button;
-                       ox = x;
-                       oy = y;
-               } else if (e->xbutton.type == ButtonRelease) {
-                       oldbutton = 3;
-                       /* MODE_MOUSEX10: no button release reporting */
-                       if (IS_SET(MODE_MOUSEX10))
-                               return;
-                       if (button == 64 || button == 65)
-                               return;
-               }
-       }
-
-       if (!IS_SET(MODE_MOUSEX10)) {
-               button += ((state & ShiftMask  ) ? 4  : 0)
-                       + ((state & Mod4Mask   ) ? 8  : 0)
-                       + ((state & ControlMask) ? 16 : 0);
-       }
-
-       if (IS_SET(MODE_MOUSESGR)) {
-               len = snprintf(buf, sizeof(buf), "\033[<%d;%d;%d%c",
-                               button, x+1, y+1,
-                               e->xbutton.type == ButtonRelease ? 'm' : 'M');
-       } else if (x < 223 && y < 223) {
-               len = snprintf(buf, sizeof(buf), "\033[M%c%c%c",
-                               32+button, 32+x+1, 32+y+1);
-       } else {
-               return;
-       }
-
-       ttywrite(buf, len);
-}
-
-void
-bpress(XEvent *e)
-{
-       struct timespec now;
-       MouseShortcut *ms;
-
-       if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
-               mousereport(e);
-               return;
-       }
-
-       for (ms = mshortcuts; ms < mshortcuts + LEN(mshortcuts); ms++) {
-               if (e->xbutton.button == ms->b
-                               && match(ms->mask, e->xbutton.state)) {
-                       ttysend(ms->s, strlen(ms->s));
-                       return;
-               }
-       }
-
-       if (e->xbutton.button == Button1) {
-               clock_gettime(CLOCK_MONOTONIC, &now);
-
-               /* Clear previous selection, logically and visually. */
-               selclear(NULL);
-               sel.mode = SEL_EMPTY;
-               sel.type = SEL_REGULAR;
-               sel.oe.x = sel.ob.x = x2col(e->xbutton.x);
-               sel.oe.y = sel.ob.y = y2row(e->xbutton.y);
-
-               /*
-                * If the user clicks below predefined timeouts specific
-                * snapping behaviour is exposed.
-                */
-               if (TIMEDIFF(now, sel.tclick2) <= tripleclicktimeout) {
-                       sel.snap = SNAP_LINE;
-               } else if (TIMEDIFF(now, sel.tclick1) <= doubleclicktimeout) {
-                       sel.snap = SNAP_WORD;
-               } else {
-                       sel.snap = 0;
-               }
-               selnormalize();
-
-               if (sel.snap != 0)
-                       sel.mode = SEL_READY;
-               tsetdirt(sel.nb.y, sel.ne.y);
-               sel.tclick2 = sel.tclick1;
-               sel.tclick1 = now;
-       }
-}
-
  char *
  getsel(void)
  {
  char *
  getsel(void)
  {
@@ -1057,308 +641,54 @@ getsel(void)
  }
  
  void
  }
  
  void
-selcopy(Time t)
+selclear(void)
  {
  {
-       xsetsel(getsel(), t);
+       if (sel.ob.x == -1)
+               return;
+       sel.mode = SEL_IDLE;
+       sel.ob.x = -1;
+       tsetdirt(sel.nb.y, sel.ne.y);
  }
  
  void
  }
  
  void
-propnotify(XEvent *e)
+die(const char *errstr, ...)
  {
  {
-       XPropertyEvent *xpev;
-       Atom clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
-
-       xpev = &e->xproperty;
-       if (xpev->state == PropertyNewValue &&
-                       (xpev->atom == XA_PRIMARY ||
-                        xpev->atom == clipboard)) {
-               selnotify(e);
-       }
+       va_list ap;
+
+       va_start(ap, errstr);
+       vfprintf(stderr, errstr, ap);
+       va_end(ap);
+       exit(1);
  }
  
  void
  }
  
  void
-selnotify(XEvent *e)
+execsh(char *cmd, char **args)
  {
  {
-       ulong nitems, ofs, rem;
-       int format;
-       uchar *data, *last, *repl;
-       Atom type, incratom, property;
-
-       incratom = XInternAtom(xw.dpy, "INCR", 0);
-
-       ofs = 0;
-       if (e->type == SelectionNotify) {
-               property = e->xselection.property;
-       } else if(e->type == PropertyNotify) {
-               property = e->xproperty.atom;
-       } else {
-               return;
-       }
-       if (property == None)
-               return;
-
-       do {
-               if (XGetWindowProperty(xw.dpy, xw.win, property, ofs,
-                                       BUFSIZ/4, False, AnyPropertyType,
-                                       &type, &format, &nitems, &rem,
-                                       &data)) {
-                       fprintf(stderr, "Clipboard allocation failed\n");
-                       return;
-               }
-
-               if (e->type == PropertyNotify && nitems == 0 && rem == 0) {
-                       /*
-                        * If there is some PropertyNotify with no data, then
-                        * this is the signal of the selection owner that all
-                        * data has been transferred. We won't need to receive
-                        * PropertyNotify events anymore.
-                        */
-                       MODBIT(xw.attrs.event_mask, 0, PropertyChangeMask);
-                       XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask,
-                                       &xw.attrs);
-               }
-
-               if (type == incratom) {
-                       /*
-                        * Activate the PropertyNotify events so we receive
-                        * when the selection owner does send us the next
-                        * chunk of data.
-                        */
-                       MODBIT(xw.attrs.event_mask, 1, PropertyChangeMask);
-                       XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask,
-                                       &xw.attrs);
-
-                       /*
-                        * Deleting the property is the transfer start signal.
-                        */
-                       XDeleteProperty(xw.dpy, xw.win, (int)property);
-                       continue;
-               }
-
-               /*
-                * As seen in getsel:
-                * Line endings are inconsistent in the terminal and GUI world
-                * copy and pasting. When receiving some selection data,
-                * replace all '\n' with '\r'.
-                * FIXME: Fix the computer world.
-                */
-               repl = data;
-               last = data + nitems * format / 8;
-               while ((repl = memchr(repl, '\n', last - repl))) {
-                       *repl++ = '\r';
-               }
-
-               if (IS_SET(MODE_BRCKTPASTE) && ofs == 0)
-                       ttywrite("\033[200~", 6);
-               ttysend((char *)data, nitems * format / 8);
-               if (IS_SET(MODE_BRCKTPASTE) && rem == 0)
-                       ttywrite("\033[201~", 6);
-               XFree(data);
-               /* number of 32-bit chunks returned */
-               ofs += nitems * format / 32;
-       } while (rem > 0);
-
-       /*
-        * Deleting the property again tells the selection owner to send the
-        * next data chunk in the property.
-        */
-       XDeleteProperty(xw.dpy, xw.win, (int)property);
-}
-
-void
-selpaste(const Arg *dummy)
-{
-       XConvertSelection(xw.dpy, XA_PRIMARY, sel.xtarget, XA_PRIMARY,
-                       xw.win, CurrentTime);
-}
-
-void
-clipcopy(const Arg *dummy)
-{
-       Atom clipboard;
-
-       if (sel.clipboard != NULL)
-               free(sel.clipboard);
-
-       if (sel.primary != NULL) {
-               sel.clipboard = xstrdup(sel.primary);
-               clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
-               XSetSelectionOwner(xw.dpy, clipboard, xw.win, CurrentTime);
-       }
-}
-
-void
-clippaste(const Arg *dummy)
-{
-       Atom clipboard;
-
-       clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
-       XConvertSelection(xw.dpy, clipboard, sel.xtarget, clipboard,
-                       xw.win, CurrentTime);
-}
-
-void
-selclear(XEvent *e)
-{
-       if (sel.ob.x == -1)
-               return;
-       sel.mode = SEL_IDLE;
-       sel.ob.x = -1;
-       tsetdirt(sel.nb.y, sel.ne.y);
-}
-
-void
-selrequest(XEvent *e)
-{
-       XSelectionRequestEvent *xsre;
-       XSelectionEvent xev;
-       Atom xa_targets, string, clipboard;
-       char *seltext;
-
-       xsre = (XSelectionRequestEvent *) e;
-       xev.type = SelectionNotify;
-       xev.requestor = xsre->requestor;
-       xev.selection = xsre->selection;
-       xev.target = xsre->target;
-       xev.time = xsre->time;
-       if (xsre->property == None)
-               xsre->property = xsre->target;
-
-       /* reject */
-       xev.property = None;
-
-       xa_targets = XInternAtom(xw.dpy, "TARGETS", 0);
-       if (xsre->target == xa_targets) {
-               /* respond with the supported type */
-               string = sel.xtarget;
-               XChangeProperty(xsre->display, xsre->requestor, xsre->property,
-                               XA_ATOM, 32, PropModeReplace,
-                               (uchar *) &string, 1);
-               xev.property = xsre->property;
-       } else if (xsre->target == sel.xtarget || xsre->target == XA_STRING) {
-               /*
-                * xith XA_STRING non ascii characters may be incorrect in the
-                * requestor. It is not our problem, use utf8.
-                */
-               clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
-               if (xsre->selection == XA_PRIMARY) {
-                       seltext = sel.primary;
-               } else if (xsre->selection == clipboard) {
-                       seltext = sel.clipboard;
-               } else {
-                       fprintf(stderr,
-                               "Unhandled clipboard selection 0x%lx\n",
-                               xsre->selection);
-                       return;
-               }
-               if (seltext != NULL) {
-                       XChangeProperty(xsre->display, xsre->requestor,
-                                       xsre->property, xsre->target,
-                                       8, PropModeReplace,
-                                       (uchar *)seltext, strlen(seltext));
-                       xev.property = xsre->property;
-               }
-       }
-
-       /* all done, send a notification to the listener */
-       if (!XSendEvent(xsre->display, xsre->requestor, 1, 0, (XEvent *) &xev))
-               fprintf(stderr, "Error sending SelectionNotify event\n");
-}
-
-void
-xsetsel(char *str, Time t)
-{
-       free(sel.primary);
-       sel.primary = str;
-
-       XSetSelectionOwner(xw.dpy, XA_PRIMARY, xw.win, t);
-       if (XGetSelectionOwner(xw.dpy, XA_PRIMARY) != xw.win)
-               selclear(0);
-}
-
-void
-brelease(XEvent *e)
-{
-       if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
-               mousereport(e);
-               return;
-       }
-
-       if (e->xbutton.button == Button2) {
-               selpaste(NULL);
-       } else if (e->xbutton.button == Button1) {
-               if (sel.mode == SEL_READY) {
-                       getbuttoninfo(e);
-                       selcopy(e->xbutton.time);
-               } else
-                       selclear(NULL);
-               sel.mode = SEL_IDLE;
-               tsetdirt(sel.nb.y, sel.ne.y);
-       }
-}
-
-void
-bmotion(XEvent *e)
-{
-       int oldey, oldex, oldsby, oldsey;
-
-       if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
-               mousereport(e);
-               return;
-       }
-
-       if (!sel.mode)
-               return;
-
-       sel.mode = SEL_READY;
-       oldey = sel.oe.y;
-       oldex = sel.oe.x;
-       oldsby = sel.nb.y;
-       oldsey = sel.ne.y;
-       getbuttoninfo(e);
-
-       if (oldey != sel.oe.y || oldex != sel.oe.x)
-               tsetdirt(MIN(sel.nb.y, oldsby), MAX(sel.ne.y, oldsey));
-}
-
-void
-die(const char *errstr, ...)
-{
-       va_list ap;
-
-       va_start(ap, errstr);
-       vfprintf(stderr, errstr, ap);
-       va_end(ap);
-       exit(1);
-}
-
-void
-execsh(void)
-{
-       char **args, *sh, *prog;
-       const struct passwd *pw;
-       char buf[sizeof(long) * 8 + 1];
+       char *sh, *prog, *arg;
+       const struct passwd *pw;
  
         errno = 0;
         if ((pw = getpwuid(getuid())) == NULL) {
                 if (errno)
  
         errno = 0;
         if ((pw = getpwuid(getuid())) == NULL) {
                 if (errno)
-                       die("getpwuid:%s\n", strerror(errno));
+                       die("getpwuid: %s\n", strerror(errno));
                 else
                         die("who are you?\n");
         }
  
         if ((sh = getenv("SHELL")) == NULL)
                 else
                         die("who are you?\n");
         }
  
         if ((sh = getenv("SHELL")) == NULL)
-               sh = (pw->pw_shell[0]) ? pw->pw_shell : shell;
-
-       if (opt_cmd)
-               prog = opt_cmd[0];
-       else if (utmp)
-               prog = utmp;
-       else
+               sh = (pw->pw_shell[0]) ? pw->pw_shell : cmd;
+
+       if (args) {
+               prog = args[0];
+               arg = NULL;
+       } else if (scroll || utmp) {
+               prog = scroll ? scroll : utmp;
+               arg = scroll ? utmp : NULL;
+       } else {
                 prog = sh;
                 prog = sh;
-       args = (opt_cmd) ? opt_cmd : (char *[]) {prog, NULL};
-
-       snprintf(buf, sizeof(buf), "%lu", xw.win);
+               arg = NULL;
+       }
+       DEFAULT(args, ((char *[]) {prog, arg, NULL}));
  
         unsetenv("COLUMNS");
         unsetenv("LINES");
  
         unsetenv("COLUMNS");
         unsetenv("LINES");
@@ -1368,7 +698,6 @@ execsh(void)
         setenv("SHELL", sh, 1);
         setenv("HOME", pw->pw_dir, 1);
         setenv("TERM", termname, 1);
         setenv("SHELL", sh, 1);
         setenv("HOME", pw->pw_dir, 1);
         setenv("TERM", termname, 1);
-       setenv("WINDOWID", buf, 1);
  
         signal(SIGCHLD, SIG_DFL);
         signal(SIGHUP, SIG_DFL);
  
         signal(SIGCHLD, SIG_DFL);
         signal(SIGHUP, SIG_DFL);
@@ -1388,19 +717,20 @@ sigchld(int a)
         pid_t p;
  
         if ((p = waitpid(pid, &stat, WNOHANG)) < 0)
         pid_t p;
  
         if ((p = waitpid(pid, &stat, WNOHANG)) < 0)
-               die("Waiting for pid %hd failed: %s\n", pid, strerror(errno));
+               die("waiting for pid %hd failed: %s\n", pid, strerror(errno));
  
         if (pid != p)
                 return;
  
  
         if (pid != p)
                 return;
  
-       if (!WIFEXITED(stat) || WEXITSTATUS(stat))
-               die("child finished with error '%d'\n", stat);
+       if (WIFEXITED(stat) && WEXITSTATUS(stat))
+               die("child exited with status %d\n", WEXITSTATUS(stat));
+       else if (WIFSIGNALED(stat))
+               die("child terminated due to signal %d\n", WTERMSIG(stat));
         exit(0);
  }
  
         exit(0);
  }
  
-
  void
  void
-stty(void)
+stty(char **args)
  {
         char cmd[_POSIX_ARG_MAX], **p, *q, *s;
         size_t n, siz;
  {
         char cmd[_POSIX_ARG_MAX], **p, *q, *s;
         size_t n, siz;
@@ -1410,7 +740,7 @@ stty(void)
         memcpy(cmd, stty_args, n);
         q = cmd + n;
         siz = sizeof(cmd) - n;
         memcpy(cmd, stty_args, n);
         q = cmd + n;
         siz = sizeof(cmd) - n;
-       for (p = opt_cmd; p && (s = *p); ++p) {
+       for (p = args; p && (s = *p); ++p) {
                 if ((n = strlen(s)) > siz-1)
                         die("stty parameter length too long\n");
                 *q++ = ' ';
                 if ((n = strlen(s)) > siz-1)
                         die("stty parameter length too long\n");
                 *q++ = ' ';
@@ -1420,40 +750,40 @@ stty(void)
         }
         *q = '\0';
         if (system(cmd) != 0)
         }
         *q = '\0';
         if (system(cmd) != 0)
-           perror("Couldn't call stty");
+               perror("Couldn't call stty");
  }
  
  }
  
-void
-ttynew(void)
+int
+ttynew(char *line, char *cmd, char *out, char **args)
  {
         int m, s;
  {
         int m, s;
-       struct winsize w = {term.row, term.col, 0, 0};
  
  
-       if (opt_io) {
+       if (out) {
                 term.mode |= MODE_PRINT;
                 term.mode |= MODE_PRINT;
-               iofd = (!strcmp(opt_io, "-")) ?
-                         1 : open(opt_io, O_WRONLY | O_CREAT, 0666);
+               iofd = (!strcmp(out, "-")) ?
+                         1 : open(out, O_WRONLY | O_CREAT, 0666);
                 if (iofd < 0) {
                         fprintf(stderr, "Error opening %s:%s\n",
                 if (iofd < 0) {
                         fprintf(stderr, "Error opening %s:%s\n",
-                               opt_io, strerror(errno));
+                               out, strerror(errno));
                 }
         }
  
                 }
         }
  
-       if (opt_line) {
-               if ((cmdfd = open(opt_line, O_RDWR)) < 0)
-                       die("open line failed: %s\n", strerror(errno));
+       if (line) {
+               if ((cmdfd = open(line, O_RDWR)) < 0)
+                       die("open line '%s' failed: %s\n",
+                           line, strerror(errno));
                 dup2(cmdfd, 0);
                 dup2(cmdfd, 0);
-               stty();
-               return;
+               stty(args);
+               return cmdfd;
         }
  
         /* seems to work fine on linux, openbsd and freebsd */
         }
  
         /* seems to work fine on linux, openbsd and freebsd */
-       if (openpty(&m, &s, NULL, NULL, &w) < 0)
+       if (openpty(&m, &s, NULL, NULL, NULL) < 0)
                 die("openpty failed: %s\n", strerror(errno));
  
         switch (pid = fork()) {
         case -1:
                 die("openpty failed: %s\n", strerror(errno));
  
         switch (pid = fork()) {
         case -1:
-               die("fork failed\n");
+               die("fork failed: %s\n", strerror(errno));
                 break;
         case 0:
                 close(iofd);
                 break;
         case 0:
                 close(iofd);
@@ -1465,14 +795,23 @@ ttynew(void)
                         die("ioctl TIOCSCTTY failed: %s\n", strerror(errno));
                 close(s);
                 close(m);
                         die("ioctl TIOCSCTTY failed: %s\n", strerror(errno));
                 close(s);
                 close(m);
-               execsh();
+#ifdef __OpenBSD__
+               if (pledge("stdio getpw proc exec", NULL) == -1)
+                       die("pledge\n");
+#endif
+               execsh(cmd, args);
                 break;
         default:
                 break;
         default:
+#ifdef __OpenBSD__
+               if (pledge("stdio rpath tty proc", NULL) == -1)
+                       die("pledge\n");
+#endif
                 close(s);
                 cmdfd = m;
                 signal(SIGCHLD, sigchld);
                 break;
         }
                 close(s);
                 cmdfd = m;
                 signal(SIGCHLD, sigchld);
                 break;
         }
+       return cmdfd;
  }
  
  size_t
  }
  
  size_t
@@ -1480,44 +819,60 @@ ttyread(void)
  {
         static char buf[BUFSIZ];
         static int buflen = 0;
  {
         static char buf[BUFSIZ];
         static int buflen = 0;
-       char *ptr;
-       int charsize; /* size of utf8 char in bytes */
-       Rune unicodep;
+       int written;
         int ret;
  
         /* append read bytes to unprocessed bytes */
         int ret;
  
         /* append read bytes to unprocessed bytes */
-       if ((ret = read(cmdfd, buf+buflen, LEN(buf)-buflen)) < 0)
-               die("Couldn't read from shell: %s\n", strerror(errno));
+       ret = read(cmdfd, buf+buflen, LEN(buf)-buflen);
  
  
-       buflen += ret;
-       ptr = buf;
+       switch (ret) {
+       case 0:
+               fputs("Found EOF in input\n", stderr);
+               exit(0);
+       case -1:
+               die("couldn't read from shell: %s\n", strerror(errno));
+       default:
+               buflen += ret;
+               written = twrite(buf, buflen, 0);
+               buflen -= written;
+               /* keep any uncomplete utf8 char for the next call */
+               if (buflen > 0)
+                       memmove(buf, buf + written, buflen);
+               return ret;
  
  
-       for (;;) {
-               if (IS_SET(MODE_UTF8) && !IS_SET(MODE_SIXEL)) {
-                       /* process a complete utf8 char */
-                       charsize = utf8decode(ptr, &unicodep, buflen);
-                       if (charsize == 0)
-                               break;
-                       tputc(unicodep);
-                       ptr += charsize;
-                       buflen -= charsize;
+       }
+}
+
+void
+ttywrite(const char *s, size_t n, int may_echo)
+{
+       const char *next;
+
+       if (may_echo && IS_SET(MODE_ECHO))
+               twrite(s, n, 1);
  
  
+       if (!IS_SET(MODE_CRLF)) {
+               ttywriteraw(s, n);
+               return;
+       }
+
+       /* This is similar to how the kernel handles ONLCR for ttys */
+       while (n > 0) {
+               if (*s == '\r') {
+                       next = s + 1;
+                       ttywriteraw("\r\n", 2);
                 } else {
                 } else {
-                       if (buflen <= 0)
-                               break;
-                       tputc(*ptr++ & 0xFF);
-                       buflen--;
+                       next = memchr(s, '\r', n);
+                       DEFAULT(next, s + n);
+                       ttywriteraw(s, next - s);
                 }
                 }
+               n -= next - s;
+               s = next;
         }
         }
-       /* keep any uncomplete utf8 char for the next call */
-       if (buflen > 0)
-               memmove(buf, ptr, buflen);
-
-       return ret;
  }
  
  void
  }
  
  void
-ttywrite(const char *s, size_t n)
+ttywriteraw(const char *s, size_t n)
  {
         fd_set wfd, rfd;
         ssize_t r;
  {
         fd_set wfd, rfd;
         ssize_t r;
@@ -1574,44 +929,25 @@ write_error:
  }
  
  void
  }
  
  void
-ttysend(char *s, size_t n)
-{
-       int len;
-       char *t, *lim;
-       Rune u;
-
-       ttywrite(s, n);
-       if (!IS_SET(MODE_ECHO))
-               return;
-
-       lim = &s[n];
-       for (t = s; t < lim; t += len) {
-               if (IS_SET(MODE_UTF8) && !IS_SET(MODE_SIXEL)) {
-                       len = utf8decode(t, &u, n);
-               } else {
-                       u = *t & 0xFF;
-                       len = 1;
-               }
-               if (len <= 0)
-                       break;
-               techo(u);
-               n -= len;
-       }
-}
-
-void
-ttyresize(void)
+ttyresize(int tw, int th)
  {
         struct winsize w;
  
         w.ws_row = term.row;
         w.ws_col = term.col;
  {
         struct winsize w;
  
         w.ws_row = term.row;
         w.ws_col = term.col;
-       w.ws_xpixel = xw.tw;
-       w.ws_ypixel = xw.th;
+       w.ws_xpixel = tw;
+       w.ws_ypixel = th;
         if (ioctl(cmdfd, TIOCSWINSZ, &w) < 0)
                 fprintf(stderr, "Couldn't set window size: %s\n", strerror(errno));
  }
  
         if (ioctl(cmdfd, TIOCSWINSZ, &w) < 0)
                 fprintf(stderr, "Couldn't set window size: %s\n", strerror(errno));
  }
  
+void
+ttyhangup()
+{
+       /* Send SIGHUP to shell */
+       kill(pid, SIGHUP);
+}
+
  int
  tattrset(int attr)
  {
  int
  tattrset(int attr)
  {
@@ -1707,8 +1043,6 @@ tnew(int col, int row)
  {
         term = (Term){ .c = { .attr = { .fg = defaultfg, .bg = defaultbg } } };
         tresize(col, row);
  {
         term = (Term){ .c = { .attr = { .fg = defaultfg, .bg = defaultbg } } };
         tresize(col, row);
-       term.numlock = 1;
-
         treset();
  }
  
         treset();
  }
  
@@ -1771,7 +1105,7 @@ selscroll(int orig, int n)
  
         if (BETWEEN(sel.ob.y, orig, term.bot) || BETWEEN(sel.oe.y, orig, term.bot)) {
                 if ((sel.ob.y += n) > term.bot || (sel.oe.y += n) < term.top) {
  
         if (BETWEEN(sel.ob.y, orig, term.bot) || BETWEEN(sel.oe.y, orig, term.bot)) {
                 if ((sel.ob.y += n) > term.bot || (sel.oe.y += n) < term.top) {
-                       selclear(NULL);
+                       selclear();
                         return;
                 }
                 if (sel.type == SEL_RECTANGULAR) {
                         return;
                 }
                 if (sel.type == SEL_RECTANGULAR) {
@@ -1917,7 +1251,7 @@ tclearregion(int x1, int y1, int x2, int y2)
                 for (x = x1; x <= x2; x++) {
                         gp = &term.line[y][x];
                         if (selected(x, y))
                 for (x = x1; x <= x2; x++) {
                         gp = &term.line[y][x];
                         if (selected(x, y))
-                               selclear(NULL);
+                               selclear();
                         gp->fg = term.c.attr.fg;
                         gp->bg = term.c.attr.bg;
                         gp->mode = 0;
                         gp->fg = term.c.attr.fg;
                         gp->bg = term.c.attr.bg;
                         gp->mode = 0;
@@ -2118,7 +1452,8 @@ tsetattr(int *attr, int l)
                         } else {
                                 fprintf(stderr,
                                         "erresc(default): gfx attr %d unknown\n",
                         } else {
                                 fprintf(stderr,
                                         "erresc(default): gfx attr %d unknown\n",
-                                       attr[i]), csidump();
+                                       attr[i]);
+                               csidump();
                         }
                         break;
                 }
                         }
                         break;
                 }
@@ -2144,20 +1479,16 @@ tsetscroll(int t, int b)
  void
  tsetmode(int priv, int set, int *args, int narg)
  {
  void
  tsetmode(int priv, int set, int *args, int narg)
  {
-       int *lim, mode;
-       int alt;
+       int alt, *lim;
  
         for (lim = args + narg; args < lim; ++args) {
                 if (priv) {
                         switch (*args) {
                         case 1: /* DECCKM -- Cursor key */
  
         for (lim = args + narg; args < lim; ++args) {
                 if (priv) {
                         switch (*args) {
                         case 1: /* DECCKM -- Cursor key */
-                               MODBIT(term.mode, set, MODE_APPCURSOR);
+                               xsetmode(set, MODE_APPCURSOR);
                                 break;
                         case 5: /* DECSCNM -- Reverse video */
                                 break;
                         case 5: /* DECSCNM -- Reverse video */
-                               mode = term.mode;
-                               MODBIT(term.mode, set, MODE_REVERSE);
-                               if (mode != term.mode)
-                                       redraw();
+                               xsetmode(set, MODE_REVERSE);
                                 break;
                         case 6: /* DECOM -- Origin */
                                 MODBIT(term.c.state, set, CURSOR_ORIGIN);
                                 break;
                         case 6: /* DECOM -- Origin */
                                 MODBIT(term.c.state, set, CURSOR_ORIGIN);
@@ -2177,36 +1508,36 @@ tsetmode(int priv, int set, int *args, int narg)
                         case 12: /* att610 -- Start blinking cursor (IGNORED) */
                                 break;
                         case 25: /* DECTCEM -- Text Cursor Enable Mode */
                         case 12: /* att610 -- Start blinking cursor (IGNORED) */
                                 break;
                         case 25: /* DECTCEM -- Text Cursor Enable Mode */
-                               MODBIT(term.mode, !set, MODE_HIDE);
+                               xsetmode(!set, MODE_HIDE);
                                 break;
                         case 9:    /* X10 mouse compatibility mode */
                                 xsetpointermotion(0);
                                 break;
                         case 9:    /* X10 mouse compatibility mode */
                                 xsetpointermotion(0);
-                               MODBIT(term.mode, 0, MODE_MOUSE);
-                               MODBIT(term.mode, set, MODE_MOUSEX10);
+                               xsetmode(0, MODE_MOUSE);
+                               xsetmode(set, MODE_MOUSEX10);
                                 break;
                         case 1000: /* 1000: report button press */
                                 xsetpointermotion(0);
                                 break;
                         case 1000: /* 1000: report button press */
                                 xsetpointermotion(0);
-                               MODBIT(term.mode, 0, MODE_MOUSE);
-                               MODBIT(term.mode, set, MODE_MOUSEBTN);
+                               xsetmode(0, MODE_MOUSE);
+                               xsetmode(set, MODE_MOUSEBTN);
                                 break;
                         case 1002: /* 1002: report motion on button press */
                                 xsetpointermotion(0);
                                 break;
                         case 1002: /* 1002: report motion on button press */
                                 xsetpointermotion(0);
-                               MODBIT(term.mode, 0, MODE_MOUSE);
-                               MODBIT(term.mode, set, MODE_MOUSEMOTION);
+                               xsetmode(0, MODE_MOUSE);
+                               xsetmode(set, MODE_MOUSEMOTION);
                                 break;
                         case 1003: /* 1003: enable all mouse motions */
                                 xsetpointermotion(set);
                                 break;
                         case 1003: /* 1003: enable all mouse motions */
                                 xsetpointermotion(set);
-                               MODBIT(term.mode, 0, MODE_MOUSE);
-                               MODBIT(term.mode, set, MODE_MOUSEMANY);
+                               xsetmode(0, MODE_MOUSE);
+                               xsetmode(set, MODE_MOUSEMANY);
                                 break;
                         case 1004: /* 1004: send focus events to tty */
                                 break;
                         case 1004: /* 1004: send focus events to tty */
-                               MODBIT(term.mode, set, MODE_FOCUS);
+                               xsetmode(set, MODE_FOCUS);
                                 break;
                         case 1006: /* 1006: extended reporting mode */
                                 break;
                         case 1006: /* 1006: extended reporting mode */
-                               MODBIT(term.mode, set, MODE_MOUSESGR);
+                               xsetmode(set, MODE_MOUSESGR);
                                 break;
                         case 1034:
                                 break;
                         case 1034:
-                               MODBIT(term.mode, set, MODE_8BIT);
+                               xsetmode(set, MODE_8BIT);
                                 break;
                         case 1049: /* swap screen & set/restore cursor as xterm */
                                 if (!allowaltscreen)
                                 break;
                         case 1049: /* swap screen & set/restore cursor as xterm */
                                 if (!allowaltscreen)
@@ -2231,7 +1562,7 @@ tsetmode(int priv, int set, int *args, int narg)
                                 tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD);
                                 break;
                         case 2004: /* 2004: bracketed paste mode */
                                 tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD);
                                 break;
                         case 2004: /* 2004: bracketed paste mode */
-                               MODBIT(term.mode, set, MODE_BRCKTPASTE);
+                               xsetmode(set, MODE_BRCKTPASTE);
                                 break;
                         /* Not implemented mouse modes. See comments there. */
                         case 1001: /* mouse highlight mode; can hang the
                                 break;
                         /* Not implemented mouse modes. See comments there. */
                         case 1001: /* mouse highlight mode; can hang the
@@ -2242,6 +1573,7 @@ tsetmode(int priv, int set, int *args, int narg)
                         case 1015: /* urxvt mangled mouse mode; incompatible
                                       and can be mistaken for other control
                                       codes. */
                         case 1015: /* urxvt mangled mouse mode; incompatible
                                       and can be mistaken for other control
                                       codes. */
+                               break;
                         default:
                                 fprintf(stderr,
                                         "erresc: unknown private set/reset mode %d\n",
                         default:
                                 fprintf(stderr,
                                         "erresc: unknown private set/reset mode %d\n",
@@ -2252,8 +1584,8 @@ tsetmode(int priv, int set, int *args, int narg)
                         switch (*args) {
                         case 0:  /* Error (IGNORED) */
                                 break;
                         switch (*args) {
                         case 0:  /* Error (IGNORED) */
                                 break;
-                       case 2:  /* KAM -- keyboard action */
-                               MODBIT(term.mode, set, MODE_KBDLOCK);
+                       case 2:
+                               xsetmode(set, MODE_KBDLOCK);
                                 break;
                         case 4:  /* IRM -- Insertion-replacement */
                                 MODBIT(term.mode, set, MODE_INSERT);
                                 break;
                         case 4:  /* IRM -- Insertion-replacement */
                                 MODBIT(term.mode, set, MODE_INSERT);
@@ -2321,7 +1653,7 @@ csihandle(void)
                 break;
         case 'c': /* DA -- Device Attributes */
                 if (csiescseq.arg[0] == 0)
                 break;
         case 'c': /* DA -- Device Attributes */
                 if (csiescseq.arg[0] == 0)
-                       ttywrite(vtiden, sizeof(vtiden) - 1);
+                       ttywrite(vtiden, strlen(vtiden), 0);
                 break;
         case 'C': /* CUF -- Cursor <n> Forward */
         case 'a': /* HPR -- Cursor <n> Forward */
                 break;
         case 'C': /* CUF -- Cursor <n> Forward */
         case 'a': /* HPR -- Cursor <n> Forward */
@@ -2368,7 +1700,6 @@ csihandle(void)
                 tputtab(csiescseq.arg[0]);
                 break;
         case 'J': /* ED -- Clear screen */
                 tputtab(csiescseq.arg[0]);
                 break;
         case 'J': /* ED -- Clear screen */
-               selclear(NULL);
                 switch (csiescseq.arg[0]) {
                 case 0: /* below */
                         tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
                 switch (csiescseq.arg[0]) {
                 case 0: /* below */
                         tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
@@ -2449,7 +1780,7 @@ csihandle(void)
                 if (csiescseq.arg[0] == 6) {
                         len = snprintf(buf, sizeof(buf),"\033[%i;%iR",
                                         term.c.y+1, term.c.x+1);
                 if (csiescseq.arg[0] == 6) {
                         len = snprintf(buf, sizeof(buf),"\033[%i;%iR",
                                         term.c.y+1, term.c.x+1);
-                       ttywrite(buf, len);
+                       ttywrite(buf, len, 0);
                 }
                 break;
         case 'r': /* DECSTBM -- Set Scrolling Region */
                 }
                 break;
         case 'r': /* DECSTBM -- Set Scrolling Region */
@@ -2471,11 +1802,8 @@ csihandle(void)
         case ' ':
                 switch (csiescseq.mode[1]) {
                 case 'q': /* DECSCUSR -- Set Cursor Style */
         case ' ':
                 switch (csiescseq.mode[1]) {
                 case 'q': /* DECSCUSR -- Set Cursor Style */
-                       DEFAULT(csiescseq.arg[0], 1);
-                       if (!BETWEEN(csiescseq.arg[0], 0, 6)) {
+                       if (xsetcursor(csiescseq.arg[0]))
                                 goto unknown;
                                 goto unknown;
-                       }
-                       xw.cursor = csiescseq.arg[0];
                         break;
                 default:
                         goto unknown;
                         break;
                 default:
                         goto unknown;
@@ -2487,7 +1815,7 @@ csihandle(void)
  void
  csidump(void)
  {
  void
  csidump(void)
  {
-       int i;
+       size_t i;
         uint c;
  
         fprintf(stderr, "ESC[");
         uint c;
  
         fprintf(stderr, "ESC[");
@@ -2517,7 +1845,7 @@ csireset(void)
  void
  strhandle(void)
  {
  void
  strhandle(void)
  {
-       char *p = NULL;
+       char *p = NULL, *dec;
         int j, narg, par;
  
         term.esc &= ~(ESC_STR_END|ESC_STR);
         int j, narg, par;
  
         term.esc &= ~(ESC_STR_END|ESC_STR);
@@ -2533,6 +1861,17 @@ strhandle(void)
                         if (narg > 1)
                                 xsettitle(strescseq.args[1]);
                         return;
                         if (narg > 1)
                                 xsettitle(strescseq.args[1]);
                         return;
+               case 52:
+                       if (narg > 2) {
+                               dec = base64dec(strescseq.args[2]);
+                               if (dec) {
+                                       xsetsel(dec);
+                                       xclipcopy();
+                               } else {
+                                       fprintf(stderr, "erresc: invalid base64\n");
+                               }
+                       }
+                       return;
                 case 4: /* color set */
                         if (narg < 3)
                                 break;
                 case 4: /* color set */
                         if (narg < 3)
                                 break;
@@ -2541,7 +1880,10 @@ strhandle(void)
                 case 104: /* color reset, here p = NULL */
                         j = (narg > 1) ? atoi(strescseq.args[1]) : -1;
                         if (xsetcolorname(j, p)) {
                 case 104: /* color reset, here p = NULL */
                         j = (narg > 1) ? atoi(strescseq.args[1]) : -1;
                         if (xsetcolorname(j, p)) {
-                               fprintf(stderr, "erresc: invalid color %s\n", p);
+                               if (par == 104 && narg <= 1)
+                                       return; /* color reset without parameter */
+                               fprintf(stderr, "erresc: invalid color j=%d, p=%s\n",
+                                       j, p ? p : "(null)");
                         } else {
                                 /*
                                  * TODO if defaultbg color is changed, borders
                         } else {
                                 /*
                                  * TODO if defaultbg color is changed, borders
@@ -2591,7 +1933,7 @@ strparse(void)
  void
  strdump(void)
  {
  void
  strdump(void)
  {
-       int i;
+       size_t i;
         uint c;
  
         fprintf(stderr, "ESC%c", strescseq.type);
         uint c;
  
         fprintf(stderr, "ESC%c", strescseq.type);
@@ -2618,7 +1960,10 @@ strdump(void)
  void
  strreset(void)
  {
  void
  strreset(void)
  {
-       memset(&strescseq, 0, sizeof(strescseq));
+       strescseq = (STREscape){
+               .buf = xrealloc(strescseq.buf, STR_BUF_SIZ),
+               .siz = STR_BUF_SIZ,
+       };
  }
  
  void
  }
  
  void
@@ -2632,37 +1977,12 @@ void
  tprinter(char *s, size_t len)
  {
         if (iofd != -1 && xwrite(iofd, s, len) < 0) {
  tprinter(char *s, size_t len)
  {
         if (iofd != -1 && xwrite(iofd, s, len) < 0) {
-               fprintf(stderr, "Error writing in %s:%s\n",
-                       opt_io, strerror(errno));
+               perror("Error writing to output file");
                 close(iofd);
                 iofd = -1;
         }
  }
  
                 close(iofd);
                 iofd = -1;
         }
  }
  
-void
-iso14755(const Arg *arg)
-{
-       char cmd[sizeof(ISO14755CMD) + NUMMAXLEN(xw.win)];
-       FILE *p;
-       char *us, *e, codepoint[9], uc[UTF_SIZ];
-       unsigned long utf32;
-
-       snprintf(cmd, sizeof(cmd), ISO14755CMD, xw.win);
-       if (!(p = popen(cmd, "r")))
-               return;
-
-       us = fgets(codepoint, sizeof(codepoint), p);
-       pclose(p);
-
-       if (!us || *us == '\0' || *us == '-' || strlen(us) > 7)
-               return;
-       if ((utf32 = strtoul(us, &e, 16)) == ULONG_MAX ||
-           (*e != '\n' && *e != '\0'))
-               return;
-
-       ttysend(uc, utf8encode(utf32, uc));
-}
-
  void
  toggleprinter(const Arg *arg)
  {
  void
  toggleprinter(const Arg *arg)
  {
@@ -2733,22 +2053,6 @@ tputtab(int n)
         term.c.x = LIMIT(x, 0, term.col-1);
  }
  
         term.c.x = LIMIT(x, 0, term.col-1);
  }
  
-void
-techo(Rune u)
-{
-       if (ISCONTROL(u)) { /* control code */
-               if (u & 0x80) {
-                       u &= 0x7f;
-                       tputc('^');
-                       tputc('[');
-               } else if (u != '\n' && u != '\r' && u != '\t') {
-                       u ^= 0x40;
-                       tputc('^');
-               }
-       }
-       tputc(u);
-}
-
  void
  tdefutf8(char ascii)
  {
  void
  tdefutf8(char ascii)
  {
@@ -2833,10 +2137,7 @@ tcontrolcode(uchar ascii)
                         /* backwards compatibility to xterm */
                         strhandle();
                 } else {
                         /* backwards compatibility to xterm */
                         strhandle();
                 } else {
-                       if (!(xw.state & WIN_FOCUSED))
-                               xseturgency(1);
-                       if (bellvolume)
-                               XkbBell(xw.dpy, xw.win, bellvolume, (Atom)NULL);
+                       xbell();
                 }
                 break;
         case '\033': /* ESC */
                 }
                 break;
         case '\033': /* ESC */
@@ -2892,7 +2193,7 @@ tcontrolcode(uchar ascii)
         case 0x99:   /* TODO: SGCI */
                 break;
         case 0x9a:   /* DECID -- Identify Terminal */
         case 0x99:   /* TODO: SGCI */
                 break;
         case 0x9a:   /* DECID -- Identify Terminal */
-               ttywrite(vtiden, sizeof(vtiden) - 1);
+               ttywrite(vtiden, strlen(vtiden), 0);
                 break;
         case 0x9b:   /* TODO: CSI */
         case 0x9c:   /* TODO: ST */
                 break;
         case 0x9b:   /* TODO: CSI */
         case 0x9c:   /* TODO: ST */
@@ -2964,18 +2265,18 @@ eschandle(uchar ascii)
                 }
                 break;
         case 'Z': /* DECID -- Identify Terminal */
                 }
                 break;
         case 'Z': /* DECID -- Identify Terminal */
-               ttywrite(vtiden, sizeof(vtiden) - 1);
+               ttywrite(vtiden, strlen(vtiden), 0);
                 break;
                 break;
-       case 'c': /* RIS -- Reset to inital state */
+       case 'c': /* RIS -- Reset to initial state */
                 treset();
                 treset();
-               xresettitle();
+               resettitle();
                 xloadcols();
                 break;
         case '=': /* DECPAM -- Application keypad */
                 xloadcols();
                 break;
         case '=': /* DECPAM -- Application keypad */
-               term.mode |= MODE_APPKEYPAD;
+               xsetmode(1, MODE_APPKEYPAD);
                 break;
         case '>': /* DECPNM -- Normal keypad */
                 break;
         case '>': /* DECPNM -- Normal keypad */
-               term.mode &= ~MODE_APPKEYPAD;
+               xsetmode(0, MODE_APPKEYPAD);
                 break;
         case '7': /* DECSC -- Save Cursor */
                 tcursor(CURSOR_SAVE);
                 break;
         case '7': /* DECSC -- Save Cursor */
                 tcursor(CURSOR_SAVE);
@@ -3037,7 +2338,6 @@ tputc(Rune u)
                         goto check_control_code;
                 }
  
                         goto check_control_code;
                 }
  
-
                 if (IS_SET(MODE_SIXEL)) {
                         /* TODO: implement sixel mode */
                         return;
                 if (IS_SET(MODE_SIXEL)) {
                         /* TODO: implement sixel mode */
                         return;
@@ -3045,7 +2345,7 @@ tputc(Rune u)
                 if (term.esc&ESC_DCS && strescseq.len == 0 && u == 'q')
                         term.mode |= MODE_SIXEL;
  
                 if (term.esc&ESC_DCS && strescseq.len == 0 && u == 'q')
                         term.mode |= MODE_SIXEL;
  
-               if (strescseq.len+len >= sizeof(strescseq.buf)-1) {
+               if (strescseq.len+len >= strescseq.siz) {
                         /*
                          * Here is a bug in terminals. If the user never sends
                          * some code to stop the str or esc command, then st
                         /*
                          * Here is a bug in terminals. If the user never sends
                          * some code to stop the str or esc command, then st
@@ -3059,7 +2359,10 @@ tputc(Rune u)
                          * term.esc = 0;
                          * strhandle();
                          */
                          * term.esc = 0;
                          * strhandle();
                          */
-                       return;
+                       if (strescseq.siz > (SIZE_MAX - UTF_SIZ) / 2)
+                               return;
+                       strescseq.siz *= 2;
+                       strescseq.buf = xrealloc(strescseq.buf, strescseq.siz);
                 }
  
                 memmove(&strescseq.buf[strescseq.len], c, len);
                 }
  
                 memmove(&strescseq.buf[strescseq.len], c, len);
@@ -3109,7 +2412,7 @@ check_control_code:
                 return;
         }
         if (sel.ob.x != -1 && BETWEEN(term.c.y, sel.ob.y, sel.oe.y))
                 return;
         }
         if (sel.ob.x != -1 && BETWEEN(term.c.y, sel.ob.y, sel.oe.y))
-               selclear(NULL);
+               selclear();
  
         gp = &term.line[term.c.y][term.c.x];
         if (IS_SET(MODE_WRAP) && (term.c.state & CURSOR_WRAPNEXT)) {
  
         gp = &term.line[term.c.y][term.c.x];
         if (IS_SET(MODE_WRAP) && (term.c.state & CURSOR_WRAPNEXT)) {
@@ -3142,6 +2445,38 @@ check_control_code:
         }
  }
  
         }
  }
  
+int
+twrite(const char *buf, int buflen, int show_ctrl)
+{
+       int charsize;
+       Rune u;
+       int n;
+
+       for (n = 0; n < buflen; n += charsize) {
+               if (IS_SET(MODE_UTF8) && !IS_SET(MODE_SIXEL)) {
+                       /* process a complete utf8 char */
+                       charsize = utf8decode(buf + n, &u, buflen - n);
+                       if (charsize == 0)
+                               break;
+               } else {
+                       u = buf[n] & 0xFF;
+                       charsize = 1;
+               }
+               if (show_ctrl && ISCONTROL(u)) {
+                       if (u & 0x80) {
+                               u &= 0x7f;
+                               tputc('^');
+                               tputc('[');
+                       } else if (u != '\n' && u != '\r' && u != '\t') {
+                               u ^= 0x40;
+                               tputc('^');
+                       }
+               }
+               tputc(u);
+       }
+       return n;
+}
+
  void
  tresize(int col, int row)
  {
  void
  tresize(int col, int row)
  {
@@ -3176,9 +2511,6 @@ tresize(int col, int row)
                 free(term.alt[i]);
         }
  
                 free(term.alt[i]);
         }
  
-       /* resize to new width */
-       term.specbuf = xrealloc(term.specbuf, col * sizeof(XftGlyphFontSpec));
-
         /* resize to new height */
         term.line = xrealloc(term.line, row * sizeof(Line));
         term.alt  = xrealloc(term.alt,  row * sizeof(Line));
         /* resize to new height */
         term.line = xrealloc(term.line, row * sizeof(Line));
         term.alt  = xrealloc(term.alt,  row * sizeof(Line));
@@ -3192,7 +2524,7 @@ tresize(int col, int row)
         }
  
         /* allocate any new rows */
         }
  
         /* allocate any new rows */
-       for (/* i == minrow */; i < row; i++) {
+       for (/* i = minrow */; i < row; i++) {
                 term.line[i] = xmalloc(col * sizeof(Glyph));
                 term.alt[i] = xmalloc(col * sizeof(Glyph));
         }
                 term.line[i] = xmalloc(col * sizeof(Glyph));
                 term.alt[i] = xmalloc(col * sizeof(Glyph));
         }
@@ -3228,1313 +2560,51 @@ tresize(int col, int row)
  }
  
  void
  }
  
  void
-xresize(int col, int row)
-{
-       xw.tw = MAX(1, col * xw.cw);
-       xw.th = MAX(1, row * xw.ch);
-
-       XFreePixmap(xw.dpy, xw.buf);
-       xw.buf = XCreatePixmap(xw.dpy, xw.win, xw.w, xw.h,
-                       DefaultDepth(xw.dpy, xw.scr));
-       XftDrawChange(xw.draw, xw.buf);
-       xclear(0, 0, xw.w, xw.h);
-}
-
-ushort
-sixd_to_16bit(int x)
-{
-       return x == 0 ? 0 : 0x3737 + 0x2828 * x;
-}
-
-int
-xloadcolor(int i, const char *name, Color *ncolor)
+resettitle(void)
  {
  {
-       XRenderColor color = { .alpha = 0xffff };
-
-       if (!name) {
-               if (BETWEEN(i, 16, 255)) { /* 256 color */
-                       if (i < 6*6*6+16) { /* same colors as xterm */
-                               color.red   = sixd_to_16bit( ((i-16)/36)%6 );
-                               color.green = sixd_to_16bit( ((i-16)/6) %6 );
-                               color.blue  = sixd_to_16bit( ((i-16)/1) %6 );
-                       } else { /* greyscale */
-                               color.red = 0x0808 + 0x0a0a * (i - (6*6*6+16));
-                               color.green = color.blue = color.red;
-                       }
-                       return XftColorAllocValue(xw.dpy, xw.vis,
-                                                 xw.cmap, &color, ncolor);
-               } else
-                       name = colorname[i];
-       }
-
-       return XftColorAllocName(xw.dpy, xw.vis, xw.cmap, name, ncolor);
+       xsettitle(NULL);
  }
  
  void
  }
  
  void
-xloadcols(void)
+drawregion(int x1, int y1, int x2, int y2)
  {
  {
-       int i;
-       static int loaded;
-       Color *cp;
+       int y;
+       for (y = y1; y < y2; y++) {
+               if (!term.dirty[y])
+                       continue;
  
  
-       if (loaded) {
-               for (cp = dc.col; cp < &dc.col[LEN(dc.col)]; ++cp)
-                       XftColorFree(xw.dpy, xw.vis, xw.cmap, cp);
+               term.dirty[y] = 0;
+               xdrawline(term.line[y], x1, y, x2);
         }
         }
-
-       for (i = 0; i < LEN(dc.col); i++)
-               if (!xloadcolor(i, NULL, &dc.col[i])) {
-                       if (colorname[i])
-                               die("Could not allocate color '%s'\n", colorname[i]);
-                       else
-                               die("Could not allocate color %d\n", i);
-               }
-       loaded = 1;
  }
  
  }
  
-int
-xsetcolorname(int x, const char *name)
+void
+draw(void)
  {
  {
-       Color ncolor;
-
-       if (!BETWEEN(x, 0, LEN(dc.col)))
-               return 1;
-
+       int cx = term.c.x;
  
  
-       if (!xloadcolor(x, name, &ncolor))
-               return 1;
-
-       XftColorFree(xw.dpy, xw.vis, xw.cmap, &dc.col[x]);
-       dc.col[x] = ncolor;
+       if (!xstartdraw())
+               return;
  
  
-       return 0;
-}
+       /* adjust cursor position */
+       LIMIT(term.ocx, 0, term.col-1);
+       LIMIT(term.ocy, 0, term.row-1);
+       if (term.line[term.ocy][term.ocx].mode & ATTR_WDUMMY)
+               term.ocx--;
+       if (term.line[term.c.y][cx].mode & ATTR_WDUMMY)
+               cx--;
  
  
-/*
- * Absolute coordinates.
- */
-void
-xclear(int x1, int y1, int x2, int y2)
-{
-       XftDrawRect(xw.draw,
-                       &dc.col[IS_SET(MODE_REVERSE)? defaultfg : defaultbg],
-                       x1, y1, x2-x1, y2-y1);
+       drawregion(0, 0, term.col, term.row);
+       xdrawcursor(cx, term.c.y, term.line[term.c.y][cx],
+                       term.ocx, term.ocy, term.line[term.ocy][term.ocx]);
+       term.ocx = cx, term.ocy = term.c.y;
+       xfinishdraw();
+       xximspot(term.ocx, term.ocy);
  }
  
  void
  }
  
  void
-xhints(void)
-{
-       XClassHint class = {opt_name ? opt_name : termname,
-                           opt_class ? opt_class : termname};
-       XWMHints wm = {.flags = InputHint, .input = 1};
-       XSizeHints *sizeh = NULL;
-
-       sizeh = XAllocSizeHints();
-
-       sizeh->flags = PSize | PResizeInc | PBaseSize;
-       sizeh->height = xw.h;
-       sizeh->width = xw.w;
-       sizeh->height_inc = xw.ch;
-       sizeh->width_inc = xw.cw;
-       sizeh->base_height = 2 * borderpx;
-       sizeh->base_width = 2 * borderpx;
-       if (xw.isfixed) {
-               sizeh->flags |= PMaxSize | PMinSize;
-               sizeh->min_width = sizeh->max_width = xw.w;
-               sizeh->min_height = sizeh->max_height = xw.h;
-       }
-       if (xw.gm & (XValue|YValue)) {
-               sizeh->flags |= USPosition | PWinGravity;
-               sizeh->x = xw.l;
-               sizeh->y = xw.t;
-               sizeh->win_gravity = xgeommasktogravity(xw.gm);
-       }
-
-       XSetWMProperties(xw.dpy, xw.win, NULL, NULL, NULL, 0, sizeh, &wm,
-                       &class);
-       XFree(sizeh);
-}
-
-int
-xgeommasktogravity(int mask)
+redraw(void)
  {
  {
-       switch (mask & (XNegative|YNegative)) {
-       case 0:
-               return NorthWestGravity;
-       case XNegative:
-               return NorthEastGravity;
-       case YNegative:
-               return SouthWestGravity;
-       }
-
-       return SouthEastGravity;
+       tfulldirt();
+       draw();
  }
  }
-
-int
-xloadfont(Font *f, FcPattern *pattern)
-{
-       FcPattern *configured;
-       FcPattern *match;
-       FcResult result;
-       XGlyphInfo extents;
-       int wantattr, haveattr;
-
-       /*
-        * Manually configure instead of calling XftMatchFont
-        * so that we can use the configured pattern for
-        * "missing glyph" lookups.
-        */
-       configured = FcPatternDuplicate(pattern);
-       if (!configured)
-               return 1;
-
-       FcConfigSubstitute(NULL, configured, FcMatchPattern);
-       XftDefaultSubstitute(xw.dpy, xw.scr, configured);
-
-       match = FcFontMatch(NULL, configured, &result);
-       if (!match) {
-               FcPatternDestroy(configured);
-               return 1;
-       }
-
-       if (!(f->match = XftFontOpenPattern(xw.dpy, match))) {
-               FcPatternDestroy(configured);
-               FcPatternDestroy(match);
-               return 1;
-       }
-
-       if ((XftPatternGetInteger(pattern, "slant", 0, &wantattr) ==
-           XftResultMatch)) {
-               /*
-                * Check if xft was unable to find a font with the appropriate
-                * slant but gave us one anyway. Try to mitigate.
-                */
-               if ((XftPatternGetInteger(f->match->pattern, "slant", 0,
-                   &haveattr) != XftResultMatch) || haveattr < wantattr) {
-                       f->badslant = 1;
-                       fputs("st: font slant does not match\n", stderr);
-               }
-       }
-
-       if ((XftPatternGetInteger(pattern, "weight", 0, &wantattr) ==
-           XftResultMatch)) {
-               if ((XftPatternGetInteger(f->match->pattern, "weight", 0,
-                   &haveattr) != XftResultMatch) || haveattr != wantattr) {
-                       f->badweight = 1;
-                       fputs("st: font weight does not match\n", stderr);
-               }
-       }
-
-       XftTextExtentsUtf8(xw.dpy, f->match,
-               (const FcChar8 *) ascii_printable,
-               strlen(ascii_printable), &extents);
-
-       f->set = NULL;
-       f->pattern = configured;
-
-       f->ascent = f->match->ascent;
-       f->descent = f->match->descent;
-       f->lbearing = 0;
-       f->rbearing = f->match->max_advance_width;
-
-       f->height = f->ascent + f->descent;
-       f->width = DIVCEIL(extents.xOff, strlen(ascii_printable));
-
-       return 0;
-}
-
-void
-xloadfonts(char *fontstr, double fontsize)
-{
-       FcPattern *pattern;
-       double fontval;
-       float ceilf(float);
-
-       if (fontstr[0] == '-') {
-               pattern = XftXlfdParse(fontstr, False, False);
-       } else {
-               pattern = FcNameParse((FcChar8 *)fontstr);
-       }
-
-       if (!pattern)
-               die("st: can't open font %s\n", fontstr);
-
-       if (fontsize > 1) {
-               FcPatternDel(pattern, FC_PIXEL_SIZE);
-               FcPatternDel(pattern, FC_SIZE);
-               FcPatternAddDouble(pattern, FC_PIXEL_SIZE, (double)fontsize);
-               usedfontsize = fontsize;
-       } else {
-               if (FcPatternGetDouble(pattern, FC_PIXEL_SIZE, 0, &fontval) ==
-                               FcResultMatch) {
-                       usedfontsize = fontval;
-               } else if (FcPatternGetDouble(pattern, FC_SIZE, 0, &fontval) ==
-                               FcResultMatch) {
-                       usedfontsize = -1;
-               } else {
-                       /*
-                        * Default font size is 12, if none given. This is to
-                        * have a known usedfontsize value.
-                        */
-                       FcPatternAddDouble(pattern, FC_PIXEL_SIZE, 12);
-                       usedfontsize = 12;
-               }
-               defaultfontsize = usedfontsize;
-       }
-
-       if (xloadfont(&dc.font, pattern))
-               die("st: can't open font %s\n", fontstr);
-
-       if (usedfontsize < 0) {
-               FcPatternGetDouble(dc.font.match->pattern,
-                                  FC_PIXEL_SIZE, 0, &fontval);
-               usedfontsize = fontval;
-               if (fontsize == 0)
-                       defaultfontsize = fontval;
-       }
-
-       /* Setting character width and height. */
-       xw.cw = ceilf(dc.font.width * cwscale);
-       xw.ch = ceilf(dc.font.height * chscale);
-
-       FcPatternDel(pattern, FC_SLANT);
-       FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ITALIC);
-       if (xloadfont(&dc.ifont, pattern))
-               die("st: can't open font %s\n", fontstr);
-
-       FcPatternDel(pattern, FC_WEIGHT);
-       FcPatternAddInteger(pattern, FC_WEIGHT, FC_WEIGHT_BOLD);
-       if (xloadfont(&dc.ibfont, pattern))
-               die("st: can't open font %s\n", fontstr);
-
-       FcPatternDel(pattern, FC_SLANT);
-       FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ROMAN);
-       if (xloadfont(&dc.bfont, pattern))
-               die("st: can't open font %s\n", fontstr);
-
-       FcPatternDestroy(pattern);
-}
-
-void
-xunloadfont(Font *f)
-{
-       XftFontClose(xw.dpy, f->match);
-       FcPatternDestroy(f->pattern);
-       if (f->set)
-               FcFontSetDestroy(f->set);
-}
-
-void
-xunloadfonts(void)
-{
-       /* Free the loaded fonts in the font cache.  */
-       while (frclen > 0)
-               XftFontClose(xw.dpy, frc[--frclen].font);
-
-       xunloadfont(&dc.font);
-       xunloadfont(&dc.bfont);
-       xunloadfont(&dc.ifont);
-       xunloadfont(&dc.ibfont);
-}
-
-void
-xzoom(const Arg *arg)
-{
-       Arg larg;
-
-       larg.f = usedfontsize + arg->f;
-       xzoomabs(&larg);
-}
-
-void
-xzoomabs(const Arg *arg)
-{
-       xunloadfonts();
-       xloadfonts(usedfont, arg->f);
-       cresize(0, 0);
-       ttyresize();
-       redraw();
-       xhints();
-}
-
-void
-xzoomreset(const Arg *arg)
-{
-       Arg larg;
-
-       if (defaultfontsize > 0) {
-               larg.f = defaultfontsize;
-               xzoomabs(&larg);
-       }
-}
-
-void
-xinit(void)
-{
-       XGCValues gcvalues;
-       Cursor cursor;
-       Window parent;
-       pid_t thispid = getpid();
-       XColor xmousefg, xmousebg;
-
-       if (!(xw.dpy = XOpenDisplay(NULL)))
-               die("Can't open display\n");
-       xw.scr = XDefaultScreen(xw.dpy);
-       xw.vis = XDefaultVisual(xw.dpy, xw.scr);
-
-       /* font */
-       if (!FcInit())
-               die("Could not init fontconfig.\n");
-
-       usedfont = (opt_font == NULL)? font : opt_font;
-       xloadfonts(usedfont, 0);
-
-       /* colors */
-       xw.cmap = XDefaultColormap(xw.dpy, xw.scr);
-       xloadcols();
-
-       /* adjust fixed window geometry */
-       xw.w = 2 * borderpx + term.col * xw.cw;
-       xw.h = 2 * borderpx + term.row * xw.ch;
-       if (xw.gm & XNegative)
-               xw.l += DisplayWidth(xw.dpy, xw.scr) - xw.w - 2;
-       if (xw.gm & YNegative)
-               xw.t += DisplayHeight(xw.dpy, xw.scr) - xw.h - 2;
-
-       /* Events */
-       xw.attrs.background_pixel = dc.col[defaultbg].pixel;
-       xw.attrs.border_pixel = dc.col[defaultbg].pixel;
-       xw.attrs.bit_gravity = NorthWestGravity;
-       xw.attrs.event_mask = FocusChangeMask | KeyPressMask
-               | ExposureMask | VisibilityChangeMask | StructureNotifyMask
-               | ButtonMotionMask | ButtonPressMask | ButtonReleaseMask;
-       xw.attrs.colormap = xw.cmap;
-
-       if (!(opt_embed && (parent = strtol(opt_embed, NULL, 0))))
-               parent = XRootWindow(xw.dpy, xw.scr);
-       xw.win = XCreateWindow(xw.dpy, parent, xw.l, xw.t,
-                       xw.w, xw.h, 0, XDefaultDepth(xw.dpy, xw.scr), InputOutput,
-                       xw.vis, CWBackPixel | CWBorderPixel | CWBitGravity
-                       | CWEventMask | CWColormap, &xw.attrs);
-
-       memset(&gcvalues, 0, sizeof(gcvalues));
-       gcvalues.graphics_exposures = False;
-       dc.gc = XCreateGC(xw.dpy, parent, GCGraphicsExposures,
-                       &gcvalues);
-       xw.buf = XCreatePixmap(xw.dpy, xw.win, xw.w, xw.h,
-                       DefaultDepth(xw.dpy, xw.scr));
-       XSetForeground(xw.dpy, dc.gc, dc.col[defaultbg].pixel);
-       XFillRectangle(xw.dpy, xw.buf, dc.gc, 0, 0, xw.w, xw.h);
-
-       /* Xft rendering context */
-       xw.draw = XftDrawCreate(xw.dpy, xw.buf, xw.vis, xw.cmap);
-
-       /* input methods */
-       if ((xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
-               XSetLocaleModifiers("@im=local");
-               if ((xw.xim =  XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
-                       XSetLocaleModifiers("@im=");
-                       if ((xw.xim = XOpenIM(xw.dpy,
-                                       NULL, NULL, NULL)) == NULL) {
-                               die("XOpenIM failed. Could not open input"
-                                       " device.\n");
-                       }
-               }
-       }
-       xw.xic = XCreateIC(xw.xim, XNInputStyle, XIMPreeditNothing
-                                          | XIMStatusNothing, XNClientWindow, xw.win,
-                                          XNFocusWindow, xw.win, NULL);
-       if (xw.xic == NULL)
-               die("XCreateIC failed. Could not obtain input method.\n");
-
-       /* white cursor, black outline */
-       cursor = XCreateFontCursor(xw.dpy, mouseshape);
-       XDefineCursor(xw.dpy, xw.win, cursor);
-
-       if (XParseColor(xw.dpy, xw.cmap, colorname[mousefg], &xmousefg) == 0) {
-               xmousefg.red   = 0xffff;
-               xmousefg.green = 0xffff;
-               xmousefg.blue  = 0xffff;
-       }
-
-       if (XParseColor(xw.dpy, xw.cmap, colorname[mousebg], &xmousebg) == 0) {
-               xmousebg.red   = 0x0000;
-               xmousebg.green = 0x0000;
-               xmousebg.blue  = 0x0000;
-       }
-
-       XRecolorCursor(xw.dpy, cursor, &xmousefg, &xmousebg);
-
-       xw.xembed = XInternAtom(xw.dpy, "_XEMBED", False);
-       xw.wmdeletewin = XInternAtom(xw.dpy, "WM_DELETE_WINDOW", False);
-       xw.netwmname = XInternAtom(xw.dpy, "_NET_WM_NAME", False);
-       XSetWMProtocols(xw.dpy, xw.win, &xw.wmdeletewin, 1);
-
-       xw.netwmpid = XInternAtom(xw.dpy, "_NET_WM_PID", False);
-       XChangeProperty(xw.dpy, xw.win, xw.netwmpid, XA_CARDINAL, 32,
-                       PropModeReplace, (uchar *)&thispid, 1);
-
-       xresettitle();
-       XMapWindow(xw.dpy, xw.win);
-       xhints();
-       XSync(xw.dpy, False);
-}
-
-int
-xmakeglyphfontspecs(XftGlyphFontSpec *specs, const Glyph *glyphs, int len, int x, int y)
-{
-       float winx = borderpx + x * xw.cw, winy = borderpx + y * xw.ch, xp, yp;
-       ushort mode, prevmode = USHRT_MAX;
-       Font *font = &dc.font;
-       int frcflags = FRC_NORMAL;
-       float runewidth = xw.cw;
-       Rune rune;
-       FT_UInt glyphidx;
-       FcResult fcres;
-       FcPattern *fcpattern, *fontpattern;
-       FcFontSet *fcsets[] = { NULL };
-       FcCharSet *fccharset;
-       int i, f, numspecs = 0;
-
-       for (i = 0, xp = winx, yp = winy + font->ascent; i < len; ++i) {
-               /* Fetch rune and mode for current glyph. */
-               rune = glyphs[i].u;
-               mode = glyphs[i].mode;
-
-               /* Skip dummy wide-character spacing. */
-               if (mode == ATTR_WDUMMY)
-                       continue;
-
-               /* Determine font for glyph if different from previous glyph. */
-               if (prevmode != mode) {
-                       prevmode = mode;
-                       font = &dc.font;
-                       frcflags = FRC_NORMAL;
-                       runewidth = xw.cw * ((mode & ATTR_WIDE) ? 2.0f : 1.0f);
-                       if ((mode & ATTR_ITALIC) && (mode & ATTR_BOLD)) {
-                               font = &dc.ibfont;
-                               frcflags = FRC_ITALICBOLD;
-                       } else if (mode & ATTR_ITALIC) {
-                               font = &dc.ifont;
-                               frcflags = FRC_ITALIC;
-                       } else if (mode & ATTR_BOLD) {
-                               font = &dc.bfont;
-                               frcflags = FRC_BOLD;
-                       }
-                       yp = winy + font->ascent;
-               }
-
-               /* Lookup character index with default font. */
-               glyphidx = XftCharIndex(xw.dpy, font->match, rune);
-               if (glyphidx) {
-                       specs[numspecs].font = font->match;
-                       specs[numspecs].glyph = glyphidx;
-                       specs[numspecs].x = (short)xp;
-                       specs[numspecs].y = (short)yp;
-                       xp += runewidth;
-                       numspecs++;
-                       continue;
-               }
-
-               /* Fallback on font cache, search the font cache for match. */
-               for (f = 0; f < frclen; f++) {
-                       glyphidx = XftCharIndex(xw.dpy, frc[f].font, rune);
-                       /* Everything correct. */
-                       if (glyphidx && frc[f].flags == frcflags)
-                               break;
-                       /* We got a default font for a not found glyph. */
-                       if (!glyphidx && frc[f].flags == frcflags
-                                       && frc[f].unicodep == rune) {
-                               break;
-                       }
-               }
-
-               /* Nothing was found. Use fontconfig to find matching font. */
-               if (f >= frclen) {
-                       if (!font->set)
-                               font->set = FcFontSort(0, font->pattern,
-                                                      1, 0, &fcres);
-                       fcsets[0] = font->set;
-
-                       /*
-                        * Nothing was found in the cache. Now use
-                        * some dozen of Fontconfig calls to get the
-                        * font for one single character.
-                        *
-                        * Xft and fontconfig are design failures.
-                        */
-                       fcpattern = FcPatternDuplicate(font->pattern);
-                       fccharset = FcCharSetCreate();
-
-                       FcCharSetAddChar(fccharset, rune);
-                       FcPatternAddCharSet(fcpattern, FC_CHARSET,
-                                       fccharset);
-                       FcPatternAddBool(fcpattern, FC_SCALABLE, 1);
-
-                       FcConfigSubstitute(0, fcpattern,
-                                       FcMatchPattern);
-                       FcDefaultSubstitute(fcpattern);
-
-                       fontpattern = FcFontSetMatch(0, fcsets, 1,
-                                       fcpattern, &fcres);
-
-                       /*
-                        * Overwrite or create the new cache entry.
-                        */
-                       if (frclen >= LEN(frc)) {
-                               frclen = LEN(frc) - 1;
-                               XftFontClose(xw.dpy, frc[frclen].font);
-                               frc[frclen].unicodep = 0;
-                       }
-
-                       frc[frclen].font = XftFontOpenPattern(xw.dpy,
-                                       fontpattern);
-                       frc[frclen].flags = frcflags;
-                       frc[frclen].unicodep = rune;
-
-                       glyphidx = XftCharIndex(xw.dpy, frc[frclen].font, rune);
-
-                       f = frclen;
-                       frclen++;
-
-                       FcPatternDestroy(fcpattern);
-                       FcCharSetDestroy(fccharset);
-               }
-
-               specs[numspecs].font = frc[f].font;
-               specs[numspecs].glyph = glyphidx;
-               specs[numspecs].x = (short)xp;
-               specs[numspecs].y = (short)yp;
-               xp += runewidth;
-               numspecs++;
-       }
-
-       return numspecs;
-}
-
-void
-xdrawglyphfontspecs(const XftGlyphFontSpec *specs, Glyph base, int len, int x, int y)
-{
-       int charlen = len * ((base.mode & ATTR_WIDE) ? 2 : 1);
-       int winx = borderpx + x * xw.cw, winy = borderpx + y * xw.ch,
-           width = charlen * xw.cw;
-       Color *fg, *bg, *temp, revfg, revbg, truefg, truebg;
-       XRenderColor colfg, colbg;
-       XRectangle r;
-
-       /* Fallback on color display for attributes not supported by the font */
-       if (base.mode & ATTR_ITALIC && base.mode & ATTR_BOLD) {
-               if (dc.ibfont.badslant || dc.ibfont.badweight)
-                       base.fg = defaultattr;
-       } else if ((base.mode & ATTR_ITALIC && dc.ifont.badslant) ||
-           (base.mode & ATTR_BOLD && dc.bfont.badweight)) {
-               base.fg = defaultattr;
-       }
-
-       if (IS_TRUECOL(base.fg)) {
-               colfg.alpha = 0xffff;
-               colfg.red = TRUERED(base.fg);
-               colfg.green = TRUEGREEN(base.fg);
-               colfg.blue = TRUEBLUE(base.fg);
-               XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &truefg);
-               fg = &truefg;
-       } else {
-               fg = &dc.col[base.fg];
-       }
-
-       if (IS_TRUECOL(base.bg)) {
-               colbg.alpha = 0xffff;
-               colbg.green = TRUEGREEN(base.bg);
-               colbg.red = TRUERED(base.bg);
-               colbg.blue = TRUEBLUE(base.bg);
-               XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg, &truebg);
-               bg = &truebg;
-       } else {
-               bg = &dc.col[base.bg];
-       }
-
-       /* Change basic system colors [0-7] to bright system colors [8-15] */
-       if ((base.mode & ATTR_BOLD_FAINT) == ATTR_BOLD && BETWEEN(base.fg, 0, 7))
-               fg = &dc.col[base.fg + 8];
-
-       if (IS_SET(MODE_REVERSE)) {
-               if (fg == &dc.col[defaultfg]) {
-                       fg = &dc.col[defaultbg];
-               } else {
-                       colfg.red = ~fg->color.red;
-                       colfg.green = ~fg->color.green;
-                       colfg.blue = ~fg->color.blue;
-                       colfg.alpha = fg->color.alpha;
-                       XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg,
-                                       &revfg);
-                       fg = &revfg;
-               }
-
-               if (bg == &dc.col[defaultbg]) {
-                       bg = &dc.col[defaultfg];
-               } else {
-                       colbg.red = ~bg->color.red;
-                       colbg.green = ~bg->color.green;
-                       colbg.blue = ~bg->color.blue;
-                       colbg.alpha = bg->color.alpha;
-                       XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg,
-                                       &revbg);
-                       bg = &revbg;
-               }
-       }
-
-       if (base.mode & ATTR_REVERSE) {
-               temp = fg;
-               fg = bg;
-               bg = temp;
-       }
-
-       if ((base.mode & ATTR_BOLD_FAINT) == ATTR_FAINT) {
-               colfg.red = fg->color.red / 2;
-               colfg.green = fg->color.green / 2;
-               colfg.blue = fg->color.blue / 2;
-               XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &revfg);
-               fg = &revfg;
-       }
-
-       if (base.mode & ATTR_BLINK && term.mode & MODE_BLINK)
-               fg = bg;
-
-       if (base.mode & ATTR_INVISIBLE)
-               fg = bg;
-
-       /* Intelligent cleaning up of the borders. */
-       if (x == 0) {
-               xclear(0, (y == 0)? 0 : winy, borderpx,
-                       winy + xw.ch + ((y >= term.row-1)? xw.h : 0));
-       }
-       if (x + charlen >= term.col) {
-               xclear(winx + width, (y == 0)? 0 : winy, xw.w,
-                       ((y >= term.row-1)? xw.h : (winy + xw.ch)));
-       }
-       if (y == 0)
-               xclear(winx, 0, winx + width, borderpx);
-       if (y == term.row-1)
-               xclear(winx, winy + xw.ch, winx + width, xw.h);
-
-       /* Clean up the region we want to draw to. */
-       XftDrawRect(xw.draw, bg, winx, winy, width, xw.ch);
-
-       /* Set the clip region because Xft is sometimes dirty. */
-       r.x = 0;
-       r.y = 0;
-       r.height = xw.ch;
-       r.width = width;
-       XftDrawSetClipRectangles(xw.draw, winx, winy, &r, 1);
-
-       /* Render the glyphs. */
-       XftDrawGlyphFontSpec(xw.draw, fg, specs, len);
-
-       /* Render underline and strikethrough. */
-       if (base.mode & ATTR_UNDERLINE) {
-               XftDrawRect(xw.draw, fg, winx, winy + dc.font.ascent + 1,
-                               width, 1);
-       }
-
-       if (base.mode & ATTR_STRUCK) {
-               XftDrawRect(xw.draw, fg, winx, winy + 2 * dc.font.ascent / 3,
-                               width, 1);
-       }
-
-       /* Reset clip to none. */
-       XftDrawSetClip(xw.draw, 0);
-}
-
-void
-xdrawglyph(Glyph g, int x, int y)
-{
-       int numspecs;
-       XftGlyphFontSpec spec;
-
-       numspecs = xmakeglyphfontspecs(&spec, &g, 1, x, y);
-       xdrawglyphfontspecs(&spec, g, numspecs, x, y);
-}
-
-void
-xdrawcursor(void)
-{
-       static int oldx = 0, oldy = 0;
-       int curx;
-       Glyph g = {' ', ATTR_NULL, defaultbg, defaultcs}, og;
-       int ena_sel = sel.ob.x != -1 && sel.alt == IS_SET(MODE_ALTSCREEN);
-       Color drawcol;
-
-       LIMIT(oldx, 0, term.col-1);
-       LIMIT(oldy, 0, term.row-1);
-
-       curx = term.c.x;
-
-       /* adjust position if in dummy */
-       if (term.line[oldy][oldx].mode & ATTR_WDUMMY)
-               oldx--;
-       if (term.line[term.c.y][curx].mode & ATTR_WDUMMY)
-               curx--;
-
-       /* remove the old cursor */
-       og = term.line[oldy][oldx];
-       if (ena_sel && selected(oldx, oldy))
-               og.mode ^= ATTR_REVERSE;
-       xdrawglyph(og, oldx, oldy);
-
-       g.u = term.line[term.c.y][term.c.x].u;
-
-       /*
-        * Select the right color for the right mode.
-        */
-       if (IS_SET(MODE_REVERSE)) {
-               g.mode |= ATTR_REVERSE;
-               g.bg = defaultfg;
-               if (ena_sel && selected(term.c.x, term.c.y)) {
-                       drawcol = dc.col[defaultcs];
-                       g.fg = defaultrcs;
-               } else {
-                       drawcol = dc.col[defaultrcs];
-                       g.fg = defaultcs;
-               }
-       } else {
-               if (ena_sel && selected(term.c.x, term.c.y)) {
-                       drawcol = dc.col[defaultrcs];
-                       g.fg = defaultfg;
-                       g.bg = defaultrcs;
-               } else {
-                       drawcol = dc.col[defaultcs];
-               }
-       }
-
-       if (IS_SET(MODE_HIDE))
-               return;
-
-       /* draw the new one */
-       if (xw.state & WIN_FOCUSED) {
-               switch (xw.cursor) {
-               case 7: /* st extension: snowman */
-                       utf8decode("☃", &g.u, UTF_SIZ);
-               case 0: /* Blinking Block */
-               case 1: /* Blinking Block (Default) */
-               case 2: /* Steady Block */
-                       g.mode |= term.line[term.c.y][curx].mode & ATTR_WIDE;
-                       xdrawglyph(g, term.c.x, term.c.y);
-                       break;
-               case 3: /* Blinking Underline */
-               case 4: /* Steady Underline */
-                       XftDrawRect(xw.draw, &drawcol,
-                                       borderpx + curx * xw.cw,
-                                       borderpx + (term.c.y + 1) * xw.ch - \
-                                               cursorthickness,
-                                       xw.cw, cursorthickness);
-                       break;
-               case 5: /* Blinking bar */
-               case 6: /* Steady bar */
-                       XftDrawRect(xw.draw, &drawcol,
-                                       borderpx + curx * xw.cw,
-                                       borderpx + term.c.y * xw.ch,
-                                       cursorthickness, xw.ch);
-                       break;
-               }
-       } else {
-               XftDrawRect(xw.draw, &drawcol,
-                               borderpx + curx * xw.cw,
-                               borderpx + term.c.y * xw.ch,
-                               xw.cw - 1, 1);
-               XftDrawRect(xw.draw, &drawcol,
-                               borderpx + curx * xw.cw,
-                               borderpx + term.c.y * xw.ch,
-                               1, xw.ch - 1);
-               XftDrawRect(xw.draw, &drawcol,
-                               borderpx + (curx + 1) * xw.cw - 1,
-                               borderpx + term.c.y * xw.ch,
-                               1, xw.ch - 1);
-               XftDrawRect(xw.draw, &drawcol,
-                               borderpx + curx * xw.cw,
-                               borderpx + (term.c.y + 1) * xw.ch - 1,
-                               xw.cw, 1);
-       }
-       oldx = curx, oldy = term.c.y;
-}
-
-
-void
-xsettitle(char *p)
-{
-       XTextProperty prop;
-
-       Xutf8TextListToTextProperty(xw.dpy, &p, 1, XUTF8StringStyle,
-                       &prop);
-       XSetWMName(xw.dpy, xw.win, &prop);
-       XSetTextProperty(xw.dpy, xw.win, &prop, xw.netwmname);
-       XFree(prop.value);
-}
-
-void
-xresettitle(void)
-{
-       xsettitle(opt_title ? opt_title : "st");
-}
-
-void
-redraw(void)
-{
-       tfulldirt();
-       draw();
-}
-
-void
-draw(void)
-{
-       drawregion(0, 0, term.col, term.row);
-       XCopyArea(xw.dpy, xw.buf, xw.win, dc.gc, 0, 0, xw.w,
-                       xw.h, 0, 0);
-       XSetForeground(xw.dpy, dc.gc,
-                       dc.col[IS_SET(MODE_REVERSE)?
-                               defaultfg : defaultbg].pixel);
-}
-
-void
-drawregion(int x1, int y1, int x2, int y2)
-{
-       int i, x, y, ox, numspecs;
-       Glyph base, new;
-       XftGlyphFontSpec *specs;
-       int ena_sel = sel.ob.x != -1 && sel.alt == IS_SET(MODE_ALTSCREEN);
-
-       if (!(xw.state & WIN_VISIBLE))
-               return;
-
-       for (y = y1; y < y2; y++) {
-               if (!term.dirty[y])
-                       continue;
-
-               term.dirty[y] = 0;
-
-               specs = term.specbuf;
-               numspecs = xmakeglyphfontspecs(specs, &term.line[y][x1], x2 - x1, x1, y);
-
-               i = ox = 0;
-               for (x = x1; x < x2 && i < numspecs; x++) {
-                       new = term.line[y][x];
-                       if (new.mode == ATTR_WDUMMY)
-                               continue;
-                       if (ena_sel && selected(x, y))
-                               new.mode ^= ATTR_REVERSE;
-                       if (i > 0 && ATTRCMP(base, new)) {
-                               xdrawglyphfontspecs(specs, base, i, ox, y);
-                               specs += i;
-                               numspecs -= i;
-                               i = 0;
-                       }
-                       if (i == 0) {
-                               ox = x;
-                               base = new;
-                       }
-                       i++;
-               }
-               if (i > 0)
-                       xdrawglyphfontspecs(specs, base, i, ox, y);
-       }
-       xdrawcursor();
-}
-
-void
-expose(XEvent *ev)
-{
-       redraw();
-}
-
-void
-visibility(XEvent *ev)
-{
-       XVisibilityEvent *e = &ev->xvisibility;
-
-       MODBIT(xw.state, e->state != VisibilityFullyObscured, WIN_VISIBLE);
-}
-
-void
-unmap(XEvent *ev)
-{
-       xw.state &= ~WIN_VISIBLE;
-}
-
-void
-xsetpointermotion(int set)
-{
-       MODBIT(xw.attrs.event_mask, set, PointerMotionMask);
-       XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask, &xw.attrs);
-}
-
-void
-xseturgency(int add)
-{
-       XWMHints *h = XGetWMHints(xw.dpy, xw.win);
-
-       MODBIT(h->flags, add, XUrgencyHint);
-       XSetWMHints(xw.dpy, xw.win, h);
-       XFree(h);
-}
-
-void
-focus(XEvent *ev)
-{
-       XFocusChangeEvent *e = &ev->xfocus;
-
-       if (e->mode == NotifyGrab)
-               return;
-
-       if (ev->type == FocusIn) {
-               XSetICFocus(xw.xic);
-               xw.state |= WIN_FOCUSED;
-               xseturgency(0);
-               if (IS_SET(MODE_FOCUS))
-                       ttywrite("\033[I", 3);
-       } else {
-               XUnsetICFocus(xw.xic);
-               xw.state &= ~WIN_FOCUSED;
-               if (IS_SET(MODE_FOCUS))
-                       ttywrite("\033[O", 3);
-       }
-}
-
-int
-match(uint mask, uint state)
-{
-       return mask == XK_ANY_MOD || mask == (state & ~ignoremod);
-}
-
-void
-numlock(const Arg *dummy)
-{
-       term.numlock ^= 1;
-}
-
-char*
-kmap(KeySym k, uint state)
-{
-       Key *kp;
-       int i;
-
-       /* Check for mapped keys out of X11 function keys. */
-       for (i = 0; i < LEN(mappedkeys); i++) {
-               if (mappedkeys[i] == k)
-                       break;
-       }
-       if (i == LEN(mappedkeys)) {
-               if ((k & 0xFFFF) < 0xFD00)
-                       return NULL;
-       }
-
-       for (kp = key; kp < key + LEN(key); kp++) {
-               if (kp->k != k)
-                       continue;
-
-               if (!match(kp->mask, state))
-                       continue;
-
-               if (IS_SET(MODE_APPKEYPAD) ? kp->appkey < 0 : kp->appkey > 0)
-                       continue;
-               if (term.numlock && kp->appkey == 2)
-                       continue;
-
-               if (IS_SET(MODE_APPCURSOR) ? kp->appcursor < 0 : kp->appcursor > 0)
-                       continue;
-
-               if (IS_SET(MODE_CRLF) ? kp->crlf < 0 : kp->crlf > 0)
-                       continue;
-
-               return kp->s;
-       }
-
-       return NULL;
-}
-
-void
-kpress(XEvent *ev)
-{
-       XKeyEvent *e = &ev->xkey;
-       KeySym ksym;
-       char buf[32], *customkey;
-       int len;
-       Rune c;
-       Status status;
-       Shortcut *bp;
-
-       if (IS_SET(MODE_KBDLOCK))
-               return;
-
-       len = XmbLookupString(xw.xic, e, buf, sizeof buf, &ksym, &status);
-       /* 1. shortcuts */
-       for (bp = shortcuts; bp < shortcuts + LEN(shortcuts); bp++) {
-               if (ksym == bp->keysym && match(bp->mod, e->state)) {
-                       bp->func(&(bp->arg));
-                       return;
-               }
-       }
-
-       /* 2. custom keys from config.h */
-       if ((customkey = kmap(ksym, e->state))) {
-               ttysend(customkey, strlen(customkey));
-               return;
-       }
-
-       /* 3. composed string from input method */
-       if (len == 0)
-               return;
-       if (len == 1 && e->state & Mod1Mask) {
-               if (IS_SET(MODE_8BIT)) {
-                       if (*buf < 0177) {
-                               c = *buf | 0x80;
-                               len = utf8encode(c, buf);
-                       }
-               } else {
-                       buf[1] = buf[0];
-                       buf[0] = '\033';
-                       len = 2;
-               }
-       }
-       ttysend(buf, len);
-}
-
-
-void
-cmessage(XEvent *e)
-{
-       /*
-        * See xembed specs
-        *  http://standards.freedesktop.org/xembed-spec/xembed-spec-latest.html
-        */
-       if (e->xclient.message_type == xw.xembed && e->xclient.format == 32) {
-               if (e->xclient.data.l[1] == XEMBED_FOCUS_IN) {
-                       xw.state |= WIN_FOCUSED;
-                       xseturgency(0);
-               } else if (e->xclient.data.l[1] == XEMBED_FOCUS_OUT) {
-                       xw.state &= ~WIN_FOCUSED;
-               }
-       } else if (e->xclient.data.l[0] == xw.wmdeletewin) {
-               /* Send SIGHUP to shell */
-               kill(pid, SIGHUP);
-               exit(0);
-       }
-}
-
-void
-cresize(int width, int height)
-{
-       int col, row;
-
-       if (width != 0)
-               xw.w = width;
-       if (height != 0)
-               xw.h = height;
-
-       col = (xw.w - 2 * borderpx) / xw.cw;
-       row = (xw.h - 2 * borderpx) / xw.ch;
-
-       tresize(col, row);
-       xresize(col, row);
-}
-
-void
-resize(XEvent *e)
-{
-       if (e->xconfigure.width == xw.w && e->xconfigure.height == xw.h)
-               return;
-
-       cresize(e->xconfigure.width, e->xconfigure.height);
-       ttyresize();
-}
-
-void
-run(void)
-{
-       XEvent ev;
-       int w = xw.w, h = xw.h;
-       fd_set rfd;
-       int xfd = XConnectionNumber(xw.dpy), xev, blinkset = 0, dodraw = 0;
-       struct timespec drawtimeout, *tv = NULL, now, last, lastblink;
-       long deltatime;
-
-       /* Waiting for window mapping */
-       do {
-               XNextEvent(xw.dpy, &ev);
-               /*
-                * This XFilterEvent call is required because of XOpenIM. It
-                * does filter out the key event and some client message for
-                * the input method too.
-                */
-               if (XFilterEvent(&ev, None))
-                       continue;
-               if (ev.type == ConfigureNotify) {
-                       w = ev.xconfigure.width;
-                       h = ev.xconfigure.height;
-               }
-       } while (ev.type != MapNotify);
-
-       cresize(w, h);
-       ttynew();
-       ttyresize();
-
-       clock_gettime(CLOCK_MONOTONIC, &last);
-       lastblink = last;
-
-       for (xev = actionfps;;) {
-               FD_ZERO(&rfd);
-               FD_SET(cmdfd, &rfd);
-               FD_SET(xfd, &rfd);
-
-               if (pselect(MAX(xfd, cmdfd)+1, &rfd, NULL, NULL, tv, NULL) < 0) {
-                       if (errno == EINTR)
-                               continue;
-                       die("select failed: %s\n", strerror(errno));
-               }
-               if (FD_ISSET(cmdfd, &rfd)) {
-                       ttyread();
-                       if (blinktimeout) {
-                               blinkset = tattrset(ATTR_BLINK);
-                               if (!blinkset)
-                                       MODBIT(term.mode, 0, MODE_BLINK);
-                       }
-               }
-
-               if (FD_ISSET(xfd, &rfd))
-                       xev = actionfps;
-
-               clock_gettime(CLOCK_MONOTONIC, &now);
-               drawtimeout.tv_sec = 0;
-               drawtimeout.tv_nsec =  (1000 * 1E6)/ xfps;
-               tv = &drawtimeout;
-
-               dodraw = 0;
-               if (blinktimeout && TIMEDIFF(now, lastblink) > blinktimeout) {
-                       tsetdirtattr(ATTR_BLINK);
-                       term.mode ^= MODE_BLINK;
-                       lastblink = now;
-                       dodraw = 1;
-               }
-               deltatime = TIMEDIFF(now, last);
-               if (deltatime > 1000 / (xev ? xfps : actionfps)) {
-                       dodraw = 1;
-                       last = now;
-               }
-
-               if (dodraw) {
-                       while (XPending(xw.dpy)) {
-                               XNextEvent(xw.dpy, &ev);
-                               if (XFilterEvent(&ev, None))
-                                       continue;
-                               if (handler[ev.type])
-                                       (handler[ev.type])(&ev);
-                       }
-
-                       draw();
-                       XFlush(xw.dpy);
-
-                       if (xev && !FD_ISSET(xfd, &rfd))
-                               xev--;
-                       if (!FD_ISSET(cmdfd, &rfd) && !FD_ISSET(xfd, &rfd)) {
-                               if (blinkset) {
-                                       if (TIMEDIFF(now, lastblink) \
-                                                       > blinktimeout) {
-                                               drawtimeout.tv_nsec = 1000;
-                                       } else {
-                                               drawtimeout.tv_nsec = (1E6 * \
-                                                       (blinktimeout - \
-                                                       TIMEDIFF(now,
-                                                               lastblink)));
-                                       }
-                                       drawtimeout.tv_sec = \
-                                           drawtimeout.tv_nsec / 1E9;
-                                       drawtimeout.tv_nsec %= (long)1E9;
-                               } else {
-                                       tv = NULL;
-                               }
-                       }
-               }
-       }
-}
-
-void
-usage(void)
-{
-       die("usage: %s [-aiv] [-c class] [-f font] [-g geometry]"
-           " [-n name] [-o file]\n"
-           "          [-T title] [-t title] [-w windowid]"
-           " [[-e] command [args ...]]\n"
-           "       %s [-aiv] [-c class] [-f font] [-g geometry]"
-           " [-n name] [-o file]\n"
-           "          [-T title] [-t title] [-w windowid] -l line"
-           " [stty_args ...]\n", argv0, argv0);
-}
-
-int
-main(int argc, char *argv[])
-{
-       uint cols = 80, rows = 24;
-
-       xw.l = xw.t = 0;
-       xw.isfixed = False;
-       xw.cursor = cursorshape;
-
-       ARGBEGIN {
-       case 'a':
-               allowaltscreen = 0;
-               break;
-       case 'c':
-               opt_class = EARGF(usage());
-               break;
-       case 'e':
-               if (argc > 0)
-                       --argc, ++argv;
-               goto run;
-       case 'f':
-               opt_font = EARGF(usage());
-               break;
-       case 'g':
-               xw.gm = XParseGeometry(EARGF(usage()),
-                               &xw.l, &xw.t, &cols, &rows);
-               break;
-       case 'i':
-               xw.isfixed = 1;
-               break;
-       case 'o':
-               opt_io = EARGF(usage());
-               break;
-       case 'l':
-               opt_line = EARGF(usage());
-               break;
-       case 'n':
-               opt_name = EARGF(usage());
-               break;
-       case 't':
-       case 'T':
-               opt_title = EARGF(usage());
-               break;
-       case 'w':
-               opt_embed = EARGF(usage());
-               break;
-       case 'v':
-               die("%s " VERSION " (c) 2010-2016 st engineers\n", argv0);
-               break;
-       default:
-               usage();
-       } ARGEND;
-
-run:
-       if (argc > 0) {
-               /* eat all remaining arguments */
-               opt_cmd = argv;
-               if (!opt_title && !opt_line)
-                       opt_title = basename(xstrdup(argv[0]));
-       }
-       setlocale(LC_CTYPE, "");
-       XSetLocaleModifiers("");
-       tnew(MAX(cols, 1), MAX(rows, 1));
-       xinit();
-       selinit();
-       run();
-
-       return 0;
-}
-