Question 1

How to use regex with ruplacer for capture groups?

Accepted Answer

Ruplacer uses Rust regex by default; specify patterns with parentheses for groups like '(\w+), (\w+)' and reference them with $1, $2 in the replacement string. Use single quotes to avoid shell interpretation.

Question 2

Ruplacer vs sed for batch text replacement?

Accepted Answer

Ruplacer is safer for codebases as it provides dry-run previews, respects .gitignore, and skips binary files automatically. Sed is more universal and faster for simple, scripted replacements but lacks these safety features.

Question 3

How to install ruplacer on Windows without Rust?

Accepted Answer

Download pre-compiled binaries from the GitHub releases page as assets, as Ruplacer offers standalone executables for Windows, Linux, and macOS without requiring Rust installation.

Question 4

Can ruplacer handle very large files or directories?

Accepted Answer

Ruplacer walks directories efficiently and skips non-text files, but performance with extremely large files isn't detailed in the README; it may depend on system memory and Rust's regex engine.

Question 5

How to filter files by type in ruplacer?

Accepted Answer

Use the --type flag with a file type like cpp or a glob pattern, or --type-not to exclude. View all supported types with ruplacer --type-list, which maps types to glob patterns.

Question 6

Does ruplacer support Perl-style regex or other engines?

Accepted Answer

No, Ruplacer only supports Rust regex, which has some differences from Perl-style patterns (e.g., no \g for named groups). For literal strings, use --no-regex to avoid regex interpretation.

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