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.

1 files changed, 15 insertions, 14 deletions

diff --git a/st.c b/st.c
index 4d44388..0980082 100644
--- 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