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#!/usr/bin/env bash
# Copyright 2026 Hee-Suk Kim <[email protected]>
# SPDX-License-Identifier: GPL-3.0-only
head_refs=()
ancestor_refs=()
head_ref=$(sib git symbolic-ref -q HEAD 2>/dev/null || :)
head_hash=$(sib git rev-parse -q --verify HEAD 2>/dev/null || :)
printf 'SIB_DIR: %s\n' "$SIB_DIR"
printf 'PLM_MODEL: %s\n' "$PLM_MODEL"
printf 'PLM_ENDPOINT: %s\n' "$PLM_ENDPOINT"
printf '\n'
if [[ -z $head_hash ]]; then
printf 'HEAD: (unborn)\n'
exit
fi
head_short=$(sib git rev-parse --short "$head_hash")
# refs/conv/* pointing current HEAD
head_refs=()
while IFS= read -r line; do
head_refs+=("$line")
done < <(
sib git for-each-ref \
--format='%(refname:strip=2)' \
--points-at="$head_hash" \
refs/conv/
)
if [[ -n $head_ref ]]; then
printf 'HEAD: %s -> %s' "$head_ref" "$head_short"
else
printf 'HEAD: %s' "$head_short"
fi
if ((${#head_refs[@]})); then
printf ' ('
separator=
for ref in "${head_refs[@]}"; do
printf '%s%s' "$separator" "$ref"
separator=', '
done
printf ')'
fi
[[ -n $head_ref ]] || printf ' [detached]'
printf '\n'
# Refs on ancestor chain
while read -r object ref; do
[[ $object == "$head_hash" ]] && continue
ancestor_refs+=("$ref")
done < <(
sib git for-each-ref \
--format='%(objectname) %(refname)' \
--merged="$head_hash" \
refs/conv/
)
((${#ancestor_refs[@]})) || exit
printf '\nchain (HEAD -> root):\n'
if parent=$(sib git rev-parse -q --verify "$head_hash" 2>/dev/null); then
sib git --no-pager log \
--graph \
--color=never \
--decorate=full \
--decorate-refs=HEAD \
--decorate-refs='refs/conv/*' \
--simplify-by-decoration \
--format='%h %d' \
"$parent"
fi
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