crontab -l colors comment lines in a different color

diff --git a/src/crontab.c b/src/crontab.c
index 11d998317164600066e81867ef5fceec81d5edb2..225fa97cec02c2cef53d7f211d6677936494ced2 100644 (file)
--- a/src/crontab.c
+++ b/src/crontab.c
@@ -66,6 +66,9 @@
 
 #define NHEADER_LINES 0
 
+#define COMMENT_COLOR  "\x1B[34m"
+#define RESET_COLOR "\033[0m"
+
 enum opt_t {opt_unknown, opt_list, opt_delete, opt_edit, opt_replace, opt_hostset, opt_hostget};
 
 #if DEBUGGING
@@ -392,6 +395,8 @@ static void list_cmd(void) {
        char n[MAX_FNAME];
        FILE *f;
        int ch;
+       const int is_tty = isatty(STDOUT);
+       int new_line = 1;
 
        log_it(RealUser, Pid, "LIST", User, 0);
        if (!glue_strings(n, sizeof n, SPOOL_DIR, User, '/')) {
@@ -409,8 +414,18 @@ static void list_cmd(void) {
        /* file is open. copy to stdout, close.
         */
        Set_LineNum(1)
-               while (EOF != (ch = get_char(f)))
+       while (EOF != (ch = get_char(f))) {
+               if (is_tty && new_line) {
+                       if (ch == '#') {
+                               fputs(COMMENT_COLOR, stdout);
+                       }
+                       else {
+                               fputs(RESET_COLOR, stdout);
+                       }
+               }
                putchar(ch);
+               new_line = ch == '\n';
+       }
        fclose(f);
 }