Fixes#6867
The bash and PowerShell parsers were not properly handling CRLF (Windows-style)
line endings when parsing script arguments. The regex patterns were only
matching LF line endings, causing scripts with CRLF to fail metadata generation.
Changes:
- Updated RE_BASH regex to optionally match \r before line end (\r?$)
- Updated RE_POWERSHELL_ARGS regex to optionally match \r (\r?)
- Added test case test_parse_bash_sig_with_crlf() to verify CRLF handling
This fix ensures that bash scripts created on Windows (or with editors
using CRLF) will correctly parse arguments and generate proper metadata
via 'wmill script generate-metadata' command.
Python parser was verified to work correctly as it uses an AST parser
that inherently handles line endings properly.
5529736784