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8bc05e598d
* implement variadic placeholders
imported snippets reflect actual lines in file
* add import directive line number for imported snippets
add tests for parsing
* add realfile field to help debug import cycle detection.
* use file field to reflect import chain
* Switch syntax, deprecate old syntax, refactoring
- Moved the import args handling to a separate file
- Using {args[0:1]} syntax now
- Deprecate {args.*} syntax
- Use a replacer map for better control over the parsing
- Add plenty of warnings when invalid placeholders are detected
- Renaming variables, cleanup comments for readability
- More tests to cover edgecases I could think of
- Minor cleanup to snippet tracking in tokens, drop a redundant boolean field in tokens
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Co-authored-by: Francis Lavoie <lavofr@gmail.com>