Disable color detection during format-patch

diff --git a/diff.c b/diff.c
index 507e4019e8bc2764daaf31ce76112ab509895704..aab246c97eb1660acfa231f7008180a12f6deb8d 100644 (file)
--- a/diff.c
+++ b/diff.c
@@ -110,8 +110,14 @@ int git_diff_config(const char *var, const char *value)
        if (!strcmp(var, "diff.color")) {
                if (!value)
                        diff_use_color_default = 1; /* bool */
-               else if (!strcasecmp(value, "auto"))
-                       diff_use_color_default = isatty(1);
+               else if (!strcasecmp(value, "auto")) {
+                       diff_use_color_default = 0;
+                       if (isatty(1)) {
+                               char *term = getenv("TERM");
+                               if (term && strcmp(term, "dumb"))
+                                       diff_use_color_default = 1;
+                       }
+               }
                else if (!strcasecmp(value, "never"))
                        diff_use_color_default = 0;
                else if (!strcasecmp(value, "always"))
@@ -329,7 +335,9 @@ static void fn_out_consume(void *priv, char *line, unsigned long len)
        }
        if (len > 0 && line[len-1] == '\n')
                len--;
-       printf("%s%.*s%s\n", set, (int) len, line, reset);
+       fputs (set, stdout);
+       fwrite (line, len, 1, stdout);
+       puts (reset);
 }
 
 static char *pprint_rename(const char *a, const char *b)