[PATCH 1/2] diffcore-pickaxe: make error messages more consistent

[Ramkumar Ramachandra <artagnon@xxxxxxxxx>]

Currently, diffcore-pickaxe reports two distinct errors for the same
user error:

    $ git log --pickaxe-regex -S'\1'
    fatal: invalid pickaxe regex: Invalid back reference

    $ git log -G'\1' # --pickaxe-regex is implied
    fatal: invalid log-grep regex: Invalid back reference

Since the error has nothing to do with "log-grep", change the -G error
message to match the -S error message.

Signed-off-by: Ramkumar Ramachandra <artagnon@xxxxxxxxx>
---
 diffcore-pickaxe.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/diffcore-pickaxe.c b/diffcore-pickaxe.c
index 63722f8..d69a7a2 100644
--- a/diffcore-pickaxe.c
+++ b/diffcore-pickaxe.c
@@ -122,7 +122,7 @@ static void diffcore_pickaxe_grep(struct diff_options *o)
 		char errbuf[1024];
 		regerror(err, &regex, errbuf, 1024);
 		regfree(&regex);
-		die("invalid log-grep regex: %s", errbuf);
+		die("invalid pickaxe regex: %s", errbuf);
 	}
 
 	pickaxe(&diff_queued_diff, o, &regex, NULL, diff_grep);
-- 
1.8.1.2.432.g070c57d

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