srgn

Uses tree-sitter to scope operations to specific language constructs, enabling precise edits like targeting only Python class bodies or Rust unsafe blocks, as demonstrated in the README examples.

Processes files recursively with glob patterns, leveraging all CPU cores; benchmarks show handling 450k lines of Python in about a second, with parallel file processing.

Supports combining multiple actions (replacement, casing, deletion) and scopes in a single command, such as --titlecase --python 'doc-strings' with regex patterns for complex workflows.

Includes dry-run mode, explicit failure flags (--fail-any/--fail-none), and requires scopes for destructive actions to prevent accidental data loss, as highlighted in the warning sections.