Steps to replicate the issue (include links if applicable):
- For the file https://commons.wikimedia.org/wiki/File:IPv6_header-en.svg
- Language dropdown shows az-latn and (default)
- Default shows English text, but az-latn shows no text at all:
*: https://commons.wikimedia.org/w/index.php?lang=az-latn&title=File%3AIPv6_header-en.svg
What happens?:
az-latn shows no text
What should have happened instead?:
az-latn should show the az-latn text
Software version (skip for WMF-hosted wikis like Wikipedia):
Thumbor/7.3.2
librsvg 2.44.10
Other information (browser name/version, screenshots, etc.):
Thumbor URLs
The az-latn Thumbor URL shows no text:
The az Thumbor URL shows az-latn text
librsvg 2.40 only matched langtags up to the first hyphen.
librsvg 2.44 does not even match the default.
May be problem with az-latn not being a Unix locale string.
Possible workaround for old librsvg 2.40 behavior is to truncate hyphenated langtags.