Make strdump(), csidump(), print to stderr

The two functions strdump(), csidump() are called to show errors and
their output is introduced by a message printed to stderr. Thus, it it
more consistent to have them print to stderr.

Moreover stderr is unbuffered (at least on Linux), making problems
immediately visible.

diff --git a/st.c b/st.c
index 4d44388..0980082 100644 (file)
--- a/st.c
+++ b/st.c
@@ -2490,22 +2490,22 @@ csidump(void)
        int i;
        uint c;
 
-       printf("ESC[");
+       fprintf(stderr, "ESC[");
        for (i = 0; i < csiescseq.len; i++) {
                c = csiescseq.buf[i] & 0xff;
                if (isprint(c)) {
-                       putchar(c);
+                       putc(c, stderr);
                } else if (c == '\n') {
-                       printf("(\\n)");
+                       fprintf(stderr, "(\\n)");
                } else if (c == '\r') {
-                       printf("(\\r)");
+                       fprintf(stderr, "(\\r)");
                } else if (c == 0x1b) {
-                       printf("(\\e)");
+                       fprintf(stderr, "(\\e)");
                } else {
-                       printf("(%02x)", c);
+                       fprintf(stderr, "(%02x)", c);
                }
        }
-       putchar('\n');
+       putc('\n', stderr);
 }
 
 void
@@ -2594,24 +2594,25 @@ strdump(void)
        int i;
        uint c;
 
-       printf("ESC%c", strescseq.type);
+       fprintf(stderr, "ESC%c", strescseq.type);
        for (i = 0; i < strescseq.len; i++) {
                c = strescseq.buf[i] & 0xff;
                if (c == '\0') {
+                       putc('\n', stderr);
                        return;
                } else if (isprint(c)) {
-                       putchar(c);
+                       putc(c, stderr);
                } else if (c == '\n') {
-                       printf("(\\n)");
+                       fprintf(stderr, "(\\n)");
                } else if (c == '\r') {
-                       printf("(\\r)");
+                       fprintf(stderr, "(\\r)");
                } else if (c == 0x1b) {
-                       printf("(\\e)");
+                       fprintf(stderr, "(\\e)");
                } else {
-                       printf("(%02x)", c);
+                       fprintf(stderr, "(%02x)", c);
                }
        }
-       printf("ESC\\\n");
+       fprintf(stderr, "ESC\\\n");
 }
 
 void