build(release.sh): use git cliff, drop old script

MAINTAIN.md

@@ -50,9 +50,7 @@ has a major bug:
 1. Fix the bug on `master`.
 2. Cherry-pick the fix to `release-x.y`.
 3. Cut a release from `release-x.y`.
-    * Run `git cliff --config scripts/cliff.toml --unreleased -o CHANGELOG.md`
-    * Run `./scripts/release.sh`
-    * Paste `CHANGELOG.md` into the release commit message.
+    * Run `./scripts/release.sh` (requires [git cliff](https://github.com/orhun/git-cliff))
     * The [CI job](https://github.com/neovim/neovim/blob/3d45706478cd030c3ee05b4f336164bb96138095/.github/workflows/release.yml#L11-L13)
       will update the release assets and [force-push to the "stable" tag](https://github.com/neovim/neovim/blob/cdd87222c86c5b2274a13d36f23de0637462e317/.github/workflows/release.yml#L229).
 

scripts/cliff.toml

@@ -47,18 +47,18 @@ commit_preprocessors = [
 ]
 # regex for parsing and grouping commits
 commit_parsers = [
-    { message = "!:", group = "<!-- 0 -->Breaking"},
-    { message = "^feat", group = "<!-- 1 -->Features"},
-    { message = "^fix", group = "<!-- 2 -->Bug Fixes"},
-    { message = "^perf", group = "<!-- 3 -->Performance"},
-    { message = "^build", group = "<!-- 4 -->Build System"},
-    { message = "^vim-patch", group = "<!-- 5 -->Vim patches"},
-    { message = "^refactor", group = "<!-- 6 -->Refactor" },
+    { message = "!:", group = "<!-- 0 -->BREAKING"},
+    { message = "^feat", group = "<!-- 1 -->FEATURES"},
+    { message = "^fix", group = "<!-- 2 -->FIXES"},
+    { message = "^perf", group = "<!-- 3 -->PERFORMANCE"},
+    { message = "^build", group = "<!-- 4 -->BUILD"},
+    { message = "^vim-patch", group = "<!-- 5 -->VIM PATCHES"},
+    { message = "^refactor", group = "<!-- 6 -->REFACTOR" },
     { message = "^ci", group = "<!-- 8 -->CI" },
-    { message = "^test", group = "<!-- 9 -->Testing" },
-    { message = "^docs", group = "<!-- 99 -->Documentation" },
-    { message = "^revert", group = "<!-- 999 -->Reverted Changes" },
-    { message = ".*", group = "<!-- 9999 -->Other"},
+    { message = "^test", group = "<!-- 9 -->TESTING" },
+    { message = "^docs", group = "<!-- 99 -->DOCUMENTATION" },
+    { message = "^revert", group = "<!-- 999 -->REVERTED CHANGES" },
+    { message = ".*", group = "<!-- 9999 -->OTHER"},
 ]
 # filter out the commits that are not matched by commit parsers
 filter_commits = true

scripts/git-log-pretty-since.sh

@@ -1,52 +0,0 @@
-#!/usr/bin/env bash
-
-# Prints a nicely-formatted commit history.
-#   - Commits are grouped below their merge-commit.
-#   - Issue numbers are moved next to the commit-id.
-#
-# Parameters:
-#   $1    "since" commit
-#   $2    "inverse match" regex pattern
-
-set -e
-set -u
-set -o pipefail
-
-__SINCE=$1
-__INVMATCH=$2
-
-is_merge_commit() {
-  git rev-parse "$1" >/dev/null 2>&1 \
-    || { echo "ERROR: invalid commit: $1"; exit 1; }
-  git log "$1"^2 >/dev/null 2>&1 && return 0 || return 1
-}
-
-# Removes parens from issue/ticket/PR numbers.
-#
-# Example:
-#   in:   3340e08becbf foo (#9423)
-#   out:  3340e08becbf foo #9423
-_deparen() {
-  sed 's/(\(\#[0-9]\{3,\}\))/\1/g'
-}
-
-# Cleans up issue/ticket/PR numbers in the commit descriptions.
-#
-# Example:
-#   in:   3340e08becbf foo (#9423)
-#   out:  3340e08becbf #9423 foo
-_format_ticketnums() {
-  nvim -Es +'g/\v(#[0-9]{3,})/norm! ngEldE0ep' +'%p' | _deparen
-}
-
-for commit in $(git log --format='%H' --first-parent "$__SINCE"..HEAD); do
-  if is_merge_commit "${commit}" ; then
-      if [ -z "$__INVMATCH" ] || ! git log --oneline "${commit}^1..${commit}^2" \
-           | >/dev/null 2>&1 grep -E "$__INVMATCH" ; then
-        git log -1 --oneline "${commit}"
-        git log --format='    %h %s' "${commit}^1..${commit}^2"
-      fi
-  else
-    git log -1 --oneline "${commit}"
-  fi
-done | _format_ticketnums

scripts/release.sh

@@ -43,18 +43,16 @@ __API_LEVEL=$(grep 'set(NVIM_API_LEVEL ' CMakeLists.txt\
   &&  { echo "ERROR: version parse failed: '${__VERSION}'"; exit 1; }
 __RELEASE_MSG="NVIM v${__VERSION}
 
-FEATURES:
-
-FIXES:
-
-CHANGES:
-
 "
 __BUMP_MSG="version bump"
 
 echo "Most recent tag: ${__LAST_TAG}"
 echo "Release version: ${__VERSION}"
 
+_git_log_pretty() {
+  git cliff --config scripts/cliff.toml --unreleased || echo 'git cliff failed'
+}
+
 _do_release_commit() {
   $__sed -i.bk 's/(NVIM_VERSION_PRERELEASE) "-dev"/\1 ""/' CMakeLists.txt
   if grep '(NVIM_API_PRERELEASE true)' CMakeLists.txt > /dev/null; then
@@ -73,7 +71,7 @@ _do_release_commit() {
     echo "Building changelog since ${__LAST_TAG}..."
 
     git add CMakeLists.txt
-    (echo "${__RELEASE_MSG}"; ./scripts/git-log-pretty-since.sh "$__LAST_TAG" 'vim-patch:[^[:space:]]') | git commit --edit -F -
+    (echo "${__RELEASE_MSG}"; _git_log_pretty) | git commit --edit -F -
   fi
 
   git tag --sign -a v"${__VERSION}" -m "NVIM v${__VERSION}"