helpful errors

[dmenu.git] / draw.c

diff --git a/draw.c b/draw.c
index 80a5074..83ced4b 100644 (file)
--- a/draw.c
+++ b/draw.c
@@ -68,6 +68,11 @@ eprintf(const char *fmt, ...) {
        va_start(ap, fmt);
        vfprintf(stderr, fmt, ap);
        va_end(ap);
+
+       if(fmt[strlen(fmt)-1] == ':') {
+               fputc(' ', stderr);
+               perror(NULL);
+       }
        exit(EXIT_FAILURE);
 }
 
@@ -101,7 +106,7 @@ initdc(void) {
        if(!setlocale(LC_CTYPE, "") || !XSupportsLocale())
                weprintf("no locale support\n");
        if(!(dc = calloc(1, sizeof *dc)))
-               eprintf("cannot malloc %u bytes\n", sizeof *dc);
+               eprintf("cannot malloc %u bytes:", sizeof *dc);
        if(!(dc->dpy = XOpenDisplay(NULL)))
                eprintf("cannot open display\n");