+
−#!/usr/bin/env bash
+
−set -euo pipefail
+
−
+
−unset GREP_OPTIONS
+
−
+
−# This script finds compatibility-related comments with a node hash specified
+
−# in all files in a given directory (. by default) and looks up the hash in a
+
−# repo (~/hg by default) to determine if each of the comments is correct and,
+
−# if not, it suggests the correct release. This can prevent accidentally
+
−# removing a piece of code that was misattributed to a different (earlier)
+
−# release of core hg.
+
−
+
−# Usage: $0 WDIR HGREPO where WDIR is usually evolve/hgext3rd/ and HGREPO is
+
−# the place with core Mercurial repo (not just checkout). Said repo has to be
+
−# sufficiently up-to-date, otherwise this script may not work correctly.
+
−
+
−workdir=${1:-'.'}
+
−hgdir=${2:-~/hg}
+
−grep -Ern 'hg <= [0-9.]+ \([0-9a-f+]+\)' "$workdir" | while read -r line; do
+
−    bashre='hg <= ([0-9.]+) \(([0-9a-f+]+)\)'
+
−    if [[ $line =~ $bashre ]]; then
+
−        expected=${BASH_REMATCH[1]}
+
−        revset=${BASH_REMATCH[2]}
+
−        tagrevset="max(tag('re:^[0-9]\\.[0-9]$') - ($revset)::)"
+
−        lastrel=$(HGPLAIN=1 hg --cwd "$hgdir" log -r "$tagrevset" -T '{tags}')
+
−        if [[ "$lastrel" != "$expected" ]]; then
+
−            echo "$line"
+
−            echo "actual last major release without $revset is $lastrel"
+
−            echo
+
−        fi
+
−    fi
+
−done