1 #!/usr/bin/env bash

     2 set -euo pipefail

     3 

     4 unset GREP_OPTIONS

     5 

     6 # This script finds compatibility-related comments with a node hash specified

     7 # in all files in a given directory (. by default) and looks up the hash in a

     8 # repo (~/hg by default) to determine if each of the comments is correct and,

     9 # if not, it suggests the correct release. This can prevent accidentally

    10 # removing a piece of code that was misattributed to a different (earlier)

    11 # release of core hg.

    12 

    13 # Usage: $0 WDIR HGREPO where WDIR is usually evolve/hgext3rd/ and HGREPO is

    14 # the place with core Mercurial repo (not just checkout). Said repo has to be

    15 # sufficiently up-to-date, otherwise this script may not work correctly.

    16 

    17 workdir=${1:-'.'}

    18 hgdir=${2:-~/hg}

    19 grep -Ern 'hg <= [0-9.]+ \([0-9a-f+]+\)' "$workdir" | while read -r line; do

    20     bashre='hg <= ([0-9.]+) \(([0-9a-f+]+)\)'

    21     if [[ $line =~ $bashre ]]; then

    22         expected=${BASH_REMATCH[1]}

    23         revset=${BASH_REMATCH[2]}

    24         tagrevset="max(tag('re:^[0-9]\\.[0-9]$') - ($revset)::)"

    25         lastrel=$(HGPLAIN=1 hg --cwd "$hgdir" log -r "$tagrevset" -T '{tags}')

    26         if [[ "$lastrel" != "$expected" ]]; then

    27             echo "$line"

    28             echo "actual last major release without $revset is $lastrel"

    29             echo

    30         fi

    31     fi

    32 done