lint-po

A simple gettext .po linter to check for mangled variable names in translations.

Features

• reads utf-8 encoded *.po files
• skips msgid/msgstr pairs where either value is unset
• compares original/translation pairs for common interpolation markers:
  • supports {name}, {123}, <123>, </123>, <123/>, %(name)s
  • ensures both messages use the same set of variables - no renames, no removals, no additions
• supports Github Actions error reporting syntax (when env.GITHUB_ACTIONS is set)
• supports lingui plural syntax - msgstr "{count, plural, one {依存関係} other {依存関係}}" is the one case when the thing in {} needs to change between msgid and msgstr

Example usage

$ lint-po locale/*.po

Difference between msgid="Hello {name}" and msgstr="Bonjour {nom}":
  Missing from msgstr: {name}
  Unexpected in msgstr: {nom}
  at problem.po:2

TODO

• catch nesting errors (<0><1></0></1>), reordering is fine but nesting still needs to make sense
• ensure positional counts (3x %s vs 4x %s, etc.)
• build: autoincrement version for releases
• check headers, Language: should match the filename