Re: [GSOC PATCH v3] commit: avoid scanning trailing comments when 'core.commentChar' is "auto"

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Hi Ayush

On 03/07/2025 00:46, Ayush Chandekar wrote:
On Wed, Jul 2, 2025 at 1:02 AM Phillip Wood <phillip.wood123@xxxxxxxxx> wrote:
diff --git a/config.c b/config.c
index eb60c293ab3..bb75bdc65d3 100644
--- a/config.c
+++ b/config.c
@@ -1537,9 +1537,11 @@ static int git_default_core_config(const char
*var, const char *value,
               !strcmp(var, "core.commentstring")) {
                   if (!value)
                           return config_error_nonbool(var);
-                else if (!strcasecmp(value, "auto"))
+                else if (!strcasecmp(value, "auto")) {
                           auto_comment_line_char = 1;
-                else if (value[0]) {
+                        FREE_AND_NULL(comment_line_str_to_free);
+                        comment_line_str = "#";
+                } else if (value[0]) {
                           if (strchr(value, '\n'))
                                   return error(_("%s cannot contain
newline"), var);
                           comment_line_str = value;


Thanks, I understood it.

What if we simply return the function `adjust_comment_line_char()` if
we get a non-zero value from `ignored_log_message_bytes()`, i.e we
won't scan the commit message in case conflict message exists, and we
let the old code exist as it is?

+       if(ignored_log_message_bytes(sb->buf, sb->len))
+               return;

So we'd ignore core.commentChar=auto if we detected conflict comments? That might be surprising to the user - it would mean that we'd always avoid adding the conflict comments to the commit message but we'd lose any lines that begin with the comment string. I think I'm leaning slightly towards the original solution but it is not clear to me that one option is much better that the other.

Thanks

Phillip





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