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enhance: fall back to DEFAULT_TEMPLATE.md when style-specific template is missing (#38803)

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Closes #38801

Introduce `DEFAULT_TEMPLATE.md` as the default message for all merge
styles.

https://gitea.com/gitea/docs/pulls/491

By the way, fix incorrect os.Expand usage for merge message & repo
template

---------

Co-authored-by: waterWang <waterWang@users.noreply.github.com>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
This commit is contained in:
water
2026-08-07 14:11:03 +00:00
committed by GitHub
co-authored by waterWang wxiaoguang
parent a34cc4cac4
commit 2657756cac
9 changed files with 152 additions and 28 deletions
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services/pull/merge.go
+26 -9
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@@ -32,6 +32,7 @@ import (
"gitea.dev/modules/references"
repo_module "gitea.dev/modules/repository"
"gitea.dev/modules/setting"
"gitea.dev/modules/templates/vars"
"gitea.dev/modules/timeutil"
"gitea.dev/modules/util"
issue_service "gitea.dev/services/issue"
@@ -66,17 +67,15 @@ func getMergeMessage(ctx context.Context, baseGitRepo *git.Repository, pr *issue
reviewedBy := pr.GetApprovers(ctx)
if mergeStyle != "" {
templateFilepath := fmt.Sprintf(".gitea/default_merge_message/%s_TEMPLATE.md", strings.ToUpper(string(mergeStyle)))
commit, err := baseGitRepo.GetBranchCommit(ctx, pr.BaseRepo.DefaultBranch)
if err != nil {
return "", "", err
}
templateContent, err := commit.GetFileContent(ctx, baseGitRepo, templateFilepath, setting.Repository.PullRequest.DefaultMergeMessageSize)
templateContent, err := resolveMergeMessageTemplate(ctx, baseGitRepo, commit, mergeStyle)
if err != nil {
if !git.IsErrNotExist(err) {
return "", "", err
}
} else {
return "", "", err
}
if templateContent != "" {
vars := map[string]string{
"BaseRepoOwnerName": pr.BaseRepo.OwnerName,
"BaseRepoName": pr.BaseRepo.Name,
@@ -146,14 +145,32 @@ func getMergeMessage(ctx context.Context, baseGitRepo *git.Repository, pr *issue
return fmt.Sprintf("Merge pull request '%s' (%s%d) from %s:%s into %s", pr.Issue.Title, issueReference, pr.Issue.Index, pr.HeadRepo.FullName(), pr.HeadBranch, pr.BaseBranch), body, nil
}
func expandDefaultMergeMessage(template string, vars map[string]string) (message, body string) {
// resolveMergeMessageTemplate returns the content of the merge message template for the given
// merge style. It first looks for a style-specific template ({STYLE}_TEMPLATE.md), and falls back
// to the generic DEFAULT_TEMPLATE.md if the style-specific one is not found.
func resolveMergeMessageTemplate(ctx context.Context, baseGitRepo *git.Repository, commit *git.Commit, mergeStyle repo_model.MergeStyle) (string, error) {
templateFilepath := fmt.Sprintf(".gitea/default_merge_message/%s_TEMPLATE.md", strings.ToUpper(string(mergeStyle)))
templateContent, err := commit.GetFileContent(ctx, baseGitRepo, templateFilepath, setting.Repository.PullRequest.DefaultMergeMessageSize)
if err == nil {
return templateContent, nil
}
if !git.IsErrNotExist(err) {
return "", err
}
templateContent, err = commit.GetFileContent(ctx, baseGitRepo, ".gitea/default_merge_message/DEFAULT_TEMPLATE.md", setting.Repository.PullRequest.DefaultMergeMessageSize)
if err == nil || git.IsErrNotExist(err) {
return templateContent, nil
}
return "", err
}
func expandDefaultMergeMessage(template string, varsMap map[string]string) (message, body string) {
message = strings.TrimSpace(template)
if splits := strings.SplitN(message, "\n", 2); len(splits) == 2 {
message = splits[0]
body = strings.TrimSpace(splits[1])
}
mapping := func(s string) string { return vars[s] }
return os.Expand(message, mapping), os.Expand(body, mapping)
return vars.ExpandShellLike(message, varsMap), vars.ExpandShellLike(body, varsMap)
}
// GetDefaultMergeMessage returns default message used when merging pull request