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fix: pass merge commit messages to git via stdin (#39269)

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`git commit --message=` passes the merge message as a single argument,
which Linux caps at 128 KiB and Windows at 32 KiB for the whole command
line. Long messages failed with `argument list too long` and the merge
box toast showed the raw HTML 500 page.

Pass the message via `--file=-` on stdin instead, and answer
fetch-action requests with JSON on server errors so the toast shows the
error text. Limits merge commit messages to 512KB which could be
extended or made configurable later.

Fixes: https://github.com/go-gitea/gitea/issues/39261
Fixes: https://github.com/go-gitea/gitea/issues/30276
Signed-off-by: wxiaoguang <wxiaoguang@gmail.com>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
This commit is contained in:
silverwind
2026-09-19 13:04:53 +00:00
committed by GitHub
co-authored by wxiaoguang
parent cc34c26172
commit cdf786ce92
21 changed files with 175 additions and 93 deletions
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modules/git/repo_index.go
-6
View File
@@ -73,12 +73,6 @@ func (repo *Repository) ReadTreeToTemporaryIndex(ctx context.Context, treeish st
return tmpIndexFilename, tmpDir, cancel, nil
}
// EmptyIndex empties the index
func (repo *Repository) EmptyIndex(ctx context.Context) error {
_, _, err := gitcmd.NewCommand("read-tree", "--empty").WithRepo(repo).RunStdString(ctx)
return err
}
// LsFiles checks if the given filenames are in the index
func (repo *Repository) LsFiles(ctx context.Context, filenames ...string) ([]string, error) {
cmd := gitcmd.NewCommand("ls-files", "-z").AddDashesAndList(filenames...)