38 lines
1.2 KiB
Text
38 lines
1.2 KiB
Text
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#!/usr/bin/env sh
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# hooks/pre-commit -- regenerate README.md from README.org on commit.
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#
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# When README.org (or build.el) is part of the commit, re-run the batch
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# Org -> Markdown export and stage the refreshed README.md so it travels
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# in the same commit. GitHub and MELPA render Markdown better than Org.
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#
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# Lightweight by design: no sentinel file, no post-commit --amend. If
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# nothing relevant changed, the hook exits immediately.
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#
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# Install: make hooks (or: ln -s ../../hooks/pre-commit .git/hooks/pre-commit)
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#
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# Set EMACS in the environment if the Emacs binary is not named "emacs"
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# on the PATH git sees (common on Windows/MSYS2).
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set -e
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REPO_ROOT="$(git rev-parse --show-toplevel)"
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cd "$REPO_ROOT"
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# Only act when README.org or the exporter itself is staged.
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if ! git diff --cached --name-only | grep -Eq '^(README\.org|build\.el)$'; then
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exit 0
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fi
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EMACS_BIN="${EMACS:-emacs}"
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if ! command -v "$EMACS_BIN" >/dev/null 2>&1; then
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echo "pre-commit: WARNING: '$EMACS_BIN' not found; README.md not regenerated." >&2
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echo "pre-commit: set EMACS to your Emacs binary, or run 'make readme'." >&2
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exit 0
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fi
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echo "pre-commit: regenerating README.md from README.org"
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"$EMACS_BIN" -Q --batch -l build.el
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git add README.md
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exit 0
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