Add error message when child exits whit error

[st.git] / st.c

diff --git a/st.c b/st.c
index 6ec4858..45bc89d 100644 (file)
--- a/st.c
+++ b/st.c
@@ -89,19 +89,18 @@ char *argv0;
 #define VT102ID "\033[?6c"
 
 enum glyph_attribute {
-        ATTR_NULL      = 0,
+       ATTR_NULL      = 0,
        ATTR_BOLD      = 1,
        ATTR_FAINT     = 2,
        ATTR_ITALIC    = 4,
        ATTR_UNDERLINE = 8,
        ATTR_BLINK     = 16,
-       ATTR_FASTBLINK = 32,
-       ATTR_REVERSE   = 64,
-       ATTR_INVISIBLE = 128,
-       ATTR_STRUCK    = 256,
-       ATTR_WRAP      = 512,
-       ATTR_WIDE      = 1024,
-       ATTR_WDUMMY    = 2048,
+       ATTR_REVERSE   = 32,
+       ATTR_INVISIBLE = 64,
+       ATTR_STRUCK    = 128,
+       ATTR_WRAP      = 256,
+       ATTR_WIDE      = 512,
+       ATTR_WDUMMY    = 1024,
 };
 
 enum cursor_movement {
@@ -405,6 +404,7 @@ static void ttyread(void);
 static void ttyresize(void);
 static void ttysend(char *, size_t);
 static void ttywrite(const char *, size_t);
+static void tstrsequence(uchar c);
 
 static void xdraws(char *, Glyph, int, int, int, int);
 static void xhints(void);
@@ -1176,16 +1176,15 @@ execsh(void) {
 
 void
 sigchld(int a) {
-       int stat = 0;
+       int stat, ret;
 
        if(waitpid(pid, &stat, 0) < 0)
                die("Waiting for pid %hd failed: %s\n", pid, strerror(errno));
 
-       if(WIFEXITED(stat)) {
-               exit(WEXITSTATUS(stat));
-       } else {
-               exit(EXIT_FAILURE);
-       }
+       ret = WIFEXITED(stat) ? WEXITSTATUS(stat) : EXIT_FAILURE;
+       if (ret != EXIT_SUCCESS)
+               die("child finished with error '%d'\n", stat);
+       exit(EXIT_SUCCESS);
 }
 
 void
@@ -1683,7 +1682,6 @@ tsetattr(int *attr, int l) {
                                ATTR_ITALIC     |
                                ATTR_UNDERLINE  |
                                ATTR_BLINK      |
-                               ATTR_FASTBLINK  |
                                ATTR_REVERSE    |
                                ATTR_INVISIBLE  |
                                ATTR_STRUCK     );
@@ -1703,10 +1701,9 @@ tsetattr(int *attr, int l) {
                        term.c.attr.mode |= ATTR_UNDERLINE;
                        break;
                case 5: /* slow blink */
-                       term.c.attr.mode |= ATTR_BLINK;
-                       break;
+                       /* FALLTHROUGH */
                case 6: /* rapid blink */
-                       term.c.attr.mode |= ATTR_FASTBLINK;
+                       term.c.attr.mode |= ATTR_BLINK;
                        break;
                case 7:
                        term.c.attr.mode |= ATTR_REVERSE;
@@ -1717,11 +1714,8 @@ tsetattr(int *attr, int l) {
                case 9:
                        term.c.attr.mode |= ATTR_STRUCK;
                        break;
-               case 21:
-                       term.c.attr.mode &= ~ATTR_BOLD;
-                       break;
                case 22:
-                       term.c.attr.mode &= ~ATTR_FAINT;
+                       term.c.attr.mode &= ~(ATTR_BOLD | ATTR_FAINT);
                        break;
                case 23:
                        term.c.attr.mode &= ~ATTR_ITALIC;
@@ -1732,9 +1726,6 @@ tsetattr(int *attr, int l) {
                case 25:
                        term.c.attr.mode &= ~ATTR_BLINK;
                        break;
-               case 26:
-                       term.c.attr.mode &= ~ATTR_FASTBLINK;
-                       break;
                case 27:
                        term.c.attr.mode &= ~ATTR_REVERSE;
                        break;
@@ -2347,6 +2338,30 @@ tdeftran(char ascii) {
        }
 }
 
+void
+tstrsequence(uchar c) {
+       if (c & 0x80) {
+               switch (c) {
+               case 0x90:   /* DCS -- Device Control String */
+                       c = 'P';
+                       break;
+               case 0x9f:   /* APC -- Application Program Command */
+                       c = '_';
+                       break;
+               case 0x9e:   /* PM -- Privacy Message */
+                       c = '^';
+                       break;
+               case 0x9d:   /* OSC -- Operating System Command */
+                       c = ']';
+                       break;
+               }
+       }
+       strreset();
+       strescseq.type = c;
+       term.esc |= ESC_STR;
+       return;
+}
+
 void
 tcontrolcode(uchar ascii) {
        static char question[UTF_SIZ] = "?";
@@ -2411,7 +2426,6 @@ tcontrolcode(uchar ascii) {
        case 0x8d:   /* TODO: RI */
        case 0x8e:   /* TODO: SS2 */
        case 0x8f:   /* TODO: SS3 */
-       case 0x90:   /* TODO: DCS */
        case 0x98:   /* TODO: SOS */
                break;
        case 0x9a:   /* DECID -- Identify Terminal */
@@ -2419,10 +2433,13 @@ tcontrolcode(uchar ascii) {
                break;
        case 0x9b:   /* TODO: CSI */
        case 0x9c:   /* TODO: ST */
-       case 0x9d:   /* TODO: OSC */
-       case 0x9e:   /* TODO: PM */
-       case 0x9f:   /* TODO: APC */
                break;
+       case 0x90:   /* DCS -- Device Control String */
+       case 0x9f:   /* APC -- Application Program Command */
+       case 0x9e:   /* PM -- Privacy Message */
+       case 0x9d:   /* OSC -- Operating System Command */
+               tstrsequence(ascii);
+               return;
        }
        /* only CAN, SUB, \a and C1 chars interrupt a sequence */
        term.esc &= ~(ESC_STR_END|ESC_STR);
@@ -2538,9 +2555,7 @@ tputc(char *c, int len) {
                        case '^': /* PM -- Privacy Message */
                        case ']': /* OSC -- Operating System Command */
                        case 'k': /* old title set compatibility */
-                               strreset();
-                               strescseq.type = ascii;
-                               term.esc |= ESC_STR;
+                               tstrsequence(ascii);
                                return;
                        case '(': /* set primary charset G0 */
                        case ')': /* set secondary charset G1 */
@@ -3761,6 +3776,8 @@ run(void) {
        /* Waiting for window mapping */
        while(1) {
                XNextEvent(xw.dpy, &ev);
+               if(XFilterEvent(&ev, None))
+                       continue;
                if(ev.type == ConfigureNotify) {
                        w = ev.xconfigure.width;
                        h = ev.xconfigure.height;