Translation rake task generated differences in `.po` files

[otegami]

When I execute the following rake task for generating translation files, there are many differences in .pofiles

Expected

There are no some differences about generated translation files with .po when I execute translation rake task.

Actual

There are some differences about generated translation files with .po.

How to reproduce

$ bundle exec rake

differences

$ git status
On branch master
Your branch is up to date with 'origin/master'.

Changes not staged for commit:
  (use "git add <file>..." to update what will be committed)
  (use "git restore <file>..." to discard changes in working directory)
        modified:   _po/ja/community/index.po
        modified:   _po/ja/development/build.po
        modified:   _po/ja/development/index.po
        modified:   _po/ja/development/release.po
        modified:   _po/ja/development/test.po
        modified:   _po/ja/faq/index.po
        modified:   _po/ja/how-to/auto-complete.po
        modified:   _po/ja/how-to/index.po
        modified:   _po/ja/how-to/jsonb.po
        modified:   _po/ja/how-to/laravel.po
        modified:   _po/ja/how-to/postgrest.po
        modified:   _po/ja/how-to/spring-hibernate.po
        modified:   _po/ja/how-to/sudachi-dictionary.po
        modified:   _po/ja/how-to/synonym-expansion.po
        modified:   _po/ja/how-to/travis-ci.po
        modified:   _po/ja/how-to/tuning.po
        modified:   _po/ja/index.po
        modified:   _po/ja/install/almalinux.po
        modified:   _po/ja/install/amazon-linux.po
        modified:   _po/ja/install/centos.po
        modified:   _po/ja/install/debian.po
        modified:   _po/ja/install/freebsd.po
        modified:   _po/ja/install/index.po
        modified:   _po/ja/install/macos.po
        modified:   _po/ja/install/os-x.po
        modified:   _po/ja/install/source.po
        modified:   _po/ja/install/ubuntu.po
        modified:   _po/ja/install/windows.po
        modified:   _po/ja/news/index.po
        modified:   _po/ja/overview/index.po
        modified:   _po/ja/reference/crash-safe.po
        modified:   _po/ja/reference/create-index-using-pgroonga.po
        modified:   _po/ja/reference/functions/pgroonga-command-escape-value.po
        modified:   _po/ja/reference/functions/pgroonga-command.po
        modified:   _po/ja/reference/functions/pgroonga-database-remove.po
        modified:   _po/ja/reference/functions/pgroonga-escape.po
        modified:   _po/ja/reference/functions/pgroonga-flush.po
        modified:   _po/ja/reference/functions/pgroonga-highlight-html.po
        modified:   _po/ja/reference/functions/pgroonga-index-column-name.po
        modified:   _po/ja/reference/functions/pgroonga-is-writable.po
        modified:   _po/ja/reference/functions/pgroonga-match-positions-byte.po
        modified:   _po/ja/reference/functions/pgroonga-match-positions-character.po
        modified:   _po/ja/reference/functions/pgroonga-normalize.po
        modified:   _po/ja/reference/functions/pgroonga-query-escape.po
        modified:   _po/ja/reference/functions/pgroonga-query-expand.po
        modified:   _po/ja/reference/functions/pgroonga-query-extract-keywords.po
        modified:   _po/ja/reference/functions/pgroonga-result-to-jsonb-objects.po
        modified:   _po/ja/reference/functions/pgroonga-result-to-recordset.po
        modified:   _po/ja/reference/functions/pgroonga-score.po
        modified:   _po/ja/reference/functions/pgroonga-set-writable.po
        modified:   _po/ja/reference/functions/pgroonga-snippet-html.po
        modified:   _po/ja/reference/functions/pgroonga-table-name.po
        modified:   _po/ja/reference/functions/pgroonga-tokenize.po
        modified:   _po/ja/reference/functions/pgroonga-vacuum.po
        modified:   _po/ja/reference/functions/pgroonga-wal-apply.po
        modified:   _po/ja/reference/functions/pgroonga-wal-set-applied-position.po
        modified:   _po/ja/reference/functions/pgroonga-wal-status.po
        modified:   _po/ja/reference/functions/pgroonga-wal-truncate.po
        modified:   _po/ja/reference/grant-usage-on-schema-pgroonga.po
        modified:   _po/ja/reference/groonga-functions/pgroonga-tuple-is-alive.po
        modified:   _po/ja/reference/index.po
        modified:   _po/ja/reference/jsonb.po
        modified:   _po/ja/reference/logical-replication.po
        modified:   _po/ja/reference/modules/pgroonga-check.po
        modified:   _po/ja/reference/modules/pgroonga-crash-safer.po
        modified:   _po/ja/reference/modules/pgroonga-database.po
        modified:   _po/ja/reference/modules/pgroonga-standby-maintainer.po
        modified:   _po/ja/reference/modules/pgroonga-wal-applier.po
        modified:   _po/ja/reference/operators/contain-array.po
        modified:   _po/ja/reference/operators/contain-jsonb.po
        modified:   _po/ja/reference/operators/contain-term-v2.po
        modified:   _po/ja/reference/operators/contain-term.po
        modified:   _po/ja/reference/operators/equal-query-v2.po
        modified:   _po/ja/reference/operators/exact-match-search.po
        modified:   _po/ja/reference/operators/like.po
        modified:   _po/ja/reference/operators/match-contain-v2.po
        modified:   _po/ja/reference/operators/match-in-v2.po
        modified:   _po/ja/reference/operators/match-jsonb-v2.po
        modified:   _po/ja/reference/operators/match-v2.po
        modified:   _po/ja/reference/operators/match.po
        modified:   _po/ja/reference/operators/not-prefix-search-in-v2.po
        modified:   _po/ja/reference/operators/prefix-rk-search-contain-v2.po
        modified:   _po/ja/reference/operators/prefix-rk-search-in-v2.po
        modified:   _po/ja/reference/operators/prefix-rk-search-v2.po
        modified:   _po/ja/reference/operators/prefix-search-contain-v2.po
        modified:   _po/ja/reference/operators/prefix-search-in-v2.po
        modified:   _po/ja/reference/operators/prefix-search-v2.po
        modified:   _po/ja/reference/operators/query-contain-v2.po
        modified:   _po/ja/reference/operators/query-in-v2.po
        modified:   _po/ja/reference/operators/query-jsonb-v2.po
        modified:   _po/ja/reference/operators/query-v2.po
        modified:   _po/ja/reference/operators/query.po
        modified:   _po/ja/reference/operators/regular-expression-in-v2.po
        modified:   _po/ja/reference/operators/regular-expression-v2.po
        modified:   _po/ja/reference/operators/regular-expression.po
        modified:   _po/ja/reference/operators/script-jsonb-v2.po
        modified:   _po/ja/reference/operators/script-jsonb.po
        modified:   _po/ja/reference/operators/script-v2.po
        modified:   _po/ja/reference/operators/similar-search-v2.po
        modified:   _po/ja/reference/parameters/enable-crash-safe.po
        modified:   _po/ja/reference/parameters/enable-trace-log.po
        modified:   _po/ja/reference/parameters/enable-wal.po
        modified:   _po/ja/reference/parameters/force-match-escalation.po
        modified:   _po/ja/reference/parameters/libgroonga-version.po
        modified:   _po/ja/reference/parameters/lock-timeout.po
        modified:   _po/ja/reference/parameters/log-level.po
        modified:   _po/ja/reference/parameters/log-path.po
        modified:   _po/ja/reference/parameters/log-type.po
        modified:   _po/ja/reference/parameters/match-escalation-threshold.po
        modified:   _po/ja/reference/parameters/max-wal-size.po
        modified:   _po/ja/reference/parameters/pgroonga-crash-safer-flush-naptime.po
        modified:   _po/ja/reference/parameters/pgroonga-crash-safer-log-level.po
        modified:   _po/ja/reference/parameters/pgroonga-crash-safer-log-path.po
        modified:   _po/ja/reference/parameters/pgroonga-standby-maintainer-max-parallel-wal-appliers-per-db.po
        modified:   _po/ja/reference/parameters/pgroonga-standby-maintainer-naptime.po
        modified:   _po/ja/reference/parameters/pgroonga-wal-applier-naptime.po
        modified:   _po/ja/reference/parameters/query-log-path.po
        modified:   _po/ja/reference/pgroonga-versus-gist-and-gin.po
        modified:   _po/ja/reference/pgroonga-versus-pg-bigm.po
        modified:   _po/ja/reference/pgroonga-versus-textsearch-and-pg-trgm.po
        modified:   _po/ja/reference/replication.po
        modified:   _po/ja/reference/streaming-replication.po
        modified:   _po/ja/tutorial/index.po
        modified:   _po/ja/uninstall/index.po
        modified:   _po/ja/upgrade/index.po
        modified:   _po/ja/users/index.po
        modified:   _po/ja/v1/how-to/auto-complete.po
        modified:   _po/ja/v1/how-to/index.po
        modified:   _po/ja/v1/how-to/travis-ci.po
        modified:   _po/ja/v1/reference/create-index-using-pgroonga.po
        modified:   _po/ja/v1/reference/functions/pgroonga-command-escape-value.po
        modified:   _po/ja/v1/reference/functions/pgroonga-command.po
        modified:   _po/ja/v1/reference/functions/pgroonga-escape.po
        modified:   _po/ja/v1/reference/functions/pgroonga-flush.po
        modified:   _po/ja/v1/reference/functions/pgroonga-highlight-html.po
        modified:   _po/ja/v1/reference/functions/pgroonga-match-positions-byte.po
        modified:   _po/ja/v1/reference/functions/pgroonga-match-positions-character.po
        modified:   _po/ja/v1/reference/functions/pgroonga-query-escape.po
        modified:   _po/ja/v1/reference/functions/pgroonga-query-expand.po
        modified:   _po/ja/v1/reference/functions/pgroonga-query-extract-keywords.po
        modified:   _po/ja/v1/reference/functions/pgroonga-score.po
        modified:   _po/ja/v1/reference/functions/pgroonga-snippet-html.po
        modified:   _po/ja/v1/reference/functions/pgroonga-table-name.po
        modified:   _po/ja/v1/reference/grant-usage-on-schema-pgroonga.po
        modified:   _po/ja/v1/reference/groonga-functions/pgroonga-tuple-is-alive.po
        modified:   _po/ja/v1/reference/index.po
        modified:   _po/ja/v1/reference/jsonb.po
        modified:   _po/ja/v1/reference/modules/pgroonga-check.po
        modified:   _po/ja/v1/reference/operators/contain-jsonb.po
        modified:   _po/ja/v1/reference/operators/contain-term-v2.po
        modified:   _po/ja/v1/reference/operators/contain-term.po
        modified:   _po/ja/v1/reference/operators/like.po
        modified:   _po/ja/v1/reference/operators/match-contain-v2.po
        modified:   _po/ja/v1/reference/operators/match-in-v2.po
        modified:   _po/ja/v1/reference/operators/match-jsonb-v2.po
        modified:   _po/ja/v1/reference/operators/match-v2.po
        modified:   _po/ja/v1/reference/operators/match.po
        modified:   _po/ja/v1/reference/operators/prefix-rk-search-contain-v2.po
        modified:   _po/ja/v1/reference/operators/prefix-rk-search-in-v2.po
        modified:   _po/ja/v1/reference/operators/prefix-rk-search-v2.po
        modified:   _po/ja/v1/reference/operators/prefix-search-contain-v2.po
        modified:   _po/ja/v1/reference/operators/prefix-search-in-v2.po
        modified:   _po/ja/v1/reference/operators/prefix-search-v2.po
        modified:   _po/ja/v1/reference/operators/query-contain-v2.po
        modified:   _po/ja/v1/reference/operators/query-in-v2.po
        modified:   _po/ja/v1/reference/operators/query-jsonb-v2.po
        modified:   _po/ja/v1/reference/operators/query-v2.po
        modified:   _po/ja/v1/reference/operators/query.po
        modified:   _po/ja/v1/reference/operators/regular-expression-v2.po
        modified:   _po/ja/v1/reference/operators/regular-expression.po
        modified:   _po/ja/v1/reference/operators/script-jsonb-v2.po
        modified:   _po/ja/v1/reference/operators/script-jsonb.po
        modified:   _po/ja/v1/reference/operators/script-v2.po
        modified:   _po/ja/v1/reference/operators/similar-search-v2.po
        modified:   _po/ja/v1/reference/parameters/enable-wal.po
        modified:   _po/ja/v1/reference/parameters/lock-timeout.po
        modified:   _po/ja/v1/reference/parameters/log-level.po
        modified:   _po/ja/v1/reference/parameters/log-path.po
        modified:   _po/ja/v1/reference/parameters/log-type.po
        modified:   _po/ja/v1/reference/parameters/match-escalation-threshold.po
        modified:   _po/ja/v1/reference/parameters/query-log-path.po
        modified:   _po/ja/v1/reference/pgroonga-versus-gist-and-gin.po
        modified:   _po/ja/v1/reference/pgroonga-versus-pg-bigm.po
        modified:   _po/ja/v1/reference/pgroonga-versus-textsearch-and-pg-trgm.po
        modified:   _po/ja/v1/reference/replication.po
        modified:   _po/ja/v1/tutorial/index.po

no changes added to commit (use "git add" and/or "git commit -a")

Next Action (Just my idea)

• Fix files each section
  • Because the differences will be huge, if we fix all of them at the same time,
• Add development steps to the README
  • Because we want to prevent developer from generating the diffs about translation files.