Support apply smart case to each individual search pattern separately · BurntSushi/ripgrep#1791

(2 留言) (1 反應) (0 負責人)Rust (63,768 star) (2,559 fork)batch import

enhancementhelp wanted

描述

Describe your feature request

ripgrep support to search several patterns together by -e or listing patterns in a file and using -f to specify the file. Meanwhile, --smart-case option can judge search pattern if it needs a case sensitive searching. But, for now, all patterns are treated together to match the smart case rule. i.e. if I use rg -S -e Abc -e bcd, search pattern bcd also be treated as case sensitive. So, I think it's better to support apply smart case rule to every search pattern separately, especially in the -f usage. But I am not sure if patterns in a single regex should support this.

I think ripgrep's man page for this change would be like:

 -S, --smart-case
            Searches case insensitively if the pattern is all lowercase. Search case
            sensitively otherwise. Every individual search pattern follow this rule 
            by itself, including PATTERN specified by -e and patterns in PATTERNFILE
            specified by -f.

貢獻者指南

技術棧: rust
領域: clisearch
議題類型: feature
難度: 3
預計時間: 1-2 days
活動狀態: fresh
清晰度: clear
前置要求: Familiarity with RustUnderstanding of regexKnowledge of ripgrep internals
新手友善度: 40
研究方向: Examine the smart case logic in `grep/src/search.rs` and how patterns are compiled. The current implementation treats all patterns as a single regex set. To apply smart case per pattern, each pattern needs to be evaluated individually. Look at how ` e` and ` f` options are processed in `grep/cli.rs`. Consider creating a `Pattern` struct that holds the original text and a flag for case sensitivity, then modify the matcher to handle per pattern flags. Review existing tests in `tests/` for smart case to understand expected behavior.