enhance(pull)!: add per-repository default squash merge commit message (#39816)

Adds a repository setting for the default squash merge commit message
body with GitHub's options `PR_BODY`, `COMMIT_MESSAGES` and `BLANK`,
also settable via `squash_merge_commit_message` in the API. The commit
title stays the pull request title.

1. Breaking: API squash merges without `merge_message_field` now get the
same default message as the web merge box instead of a title-only
commit, which affects clients sending only `Do` like Renovate. An empty
value keeps title-only.
2. Breaking: `[repository.pull-request] DEFAULT_SQUASH_MERGE_MESSAGE`
replaces `POPULATE_SQUASH_COMMENT_WITH_COMMIT_MESSAGES`, which still
works as a deprecated fallback. Repositories store the default when
created or next saved.
3. Deprecated app.ini keys now migrate through one table instead of
per-loader fallbacks, which also fixes the ignored `[mailer] CERT_FILE`
and `KEY_FILE` fallbacks. Deprecation warnings no longer claim a removal
version.

<img width="1891" height="571" alt="grafik"
src="https://github.com/user-attachments/assets/0fdcde13-1f11-4156-b598-d80eb0d04cbe"
/>

---------

Co-authored-by: silverwind <me@silverwind.io>
This commit is contained in:
bircniandsilverwind authored and GitHub committed 2026-10-19 09:15:41 +00:00
1 parent 458eda0f1d
commit ba4f8fa246
37 files changed
+273 -156

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@@ -2148,6 +2148,10 @@
"repo.settings.pulls.allow_merge_update": "Enable updating pull request branch by merge",
"repo.settings.pulls.allow_rebase_update": "Enable updating pull request branch by rebase",
"repo.settings.pulls.default_update_style": "Default branch update style",
"repo.settings.pulls.default_squash_merge_message": "Default squash merge commit message",
"repo.settings.pulls.default_squash_merge_message.title": "Pull request title",
"repo.settings.pulls.default_squash_merge_message.title_and_commit_details": "Pull request title and commit details",
"repo.settings.pulls.default_squash_merge_message.title_and_description": "Pull request title and description",
"repo.settings.pulls.default_target_branch": "Default target branch for new pull requests",
"repo.settings.pulls.default_target_branch_default": "Default branch (%s)",
"repo.settings.pulls.default_delete_branch_after_merge": "Delete pull request branch after merge by default",