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-rw-r--r--diff.c10
1 files changed, 8 insertions, 2 deletions
diff --git a/diff.c b/diff.c
index f0450a8b0..aab246c97 100644
--- 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"))