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fix(bins): detect the default branch instead of hardcoding main

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gstack-diff-scope fell to an empty diff (all-false SCOPE_*) and
gstack-next-version mis-based its bump math on any repo whose default
branch isn't main (trunk, master, local-only). Both now resolve
origin/HEAD -> origin/main -> origin/master -> main.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
This commit is contained in:
Garry Tan
2026-08-14 13:20:20 -07:00
co-authored by Claude Fable 5
parent b81d72d059
commit 56d83c684c
2 changed files with 19 additions and 2 deletions
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bin/gstack-diff-scope
+9 -1
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@@ -4,7 +4,15 @@
# Or: gstack-diff-scope main → prints SCOPE_*=... lines
set -euo pipefail
BASE="${1:-main}"
# Detect the repo's default branch when no arg is given (#703-class
# platform-agnostic rule): origin/HEAD -> origin/main -> origin/master -> main.
_default_base() {
git symbolic-ref refs/remotes/origin/HEAD 2>/dev/null | sed 's|refs/remotes/origin/||' && return
git rev-parse --verify -q origin/main >/dev/null 2>&1 && { echo "main"; return; }
git rev-parse --verify -q origin/master >/dev/null 2>&1 && { echo "master"; return; }
echo "main"
}
BASE="${1:-$(_default_base)}"
# Get changed file list
FILES=$(git diff "${BASE}...HEAD" --name-only 2>/dev/null || git diff "${BASE}" --name-only 2>/dev/null || echo "")