ui-diff: don't link to single file diff stat

Seeing the diff stat for a single file is pretty useless, so reset the
diff type before generating the links to individual files in the diff
stat so that the links will show a useful diff.

Reported-by: Konstantin Ryabitsev <mricon@kernel.org>
Signed-off-by: John Keeping <john@keeping.me.uk>

1 files changed, 10 insertions, 0 deletions

diff --git a/ui-diff.c b/ui-diff.c
index bf2ec57..5b6df1f 100644
--- a/ui-diff.c
+++ b/ui-diff.c
@@ -428,6 +428,16 @@ void cgit_print_diff(const char *new_rev, const char *old_rev,
         if (show_ctrls)
                 cgit_print_diff_ctrls();
 
+        /*
+         * Clicking on a link to a file in the diff stat should show a diff
+         * of the file, showing the diff stat limited to a single file is
+         * pretty useless.  All links from this point on will be to
+         * individual files, so we simply reset the difftype in the query
+         * here to avoid propagating DIFF_STATONLY to the individual files.
+         */
+        if (difftype == DIFF_STATONLY)
+                ctx.qry.difftype = ctx.cfg.difftype;
+
         cgit_print_diffstat(old_rev_sha1, new_rev_sha1, prefix);
 
         if (difftype == DIFF_STATONLY)