Use a character class to ignore Icon\r directories #4596
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This prevents the rule from ending in whitespace, which will get stripped by tools like Ripgrep, causing any directory named "Icon" to be invisible.
wirecat
approved these changes
Apr 25, 2025
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Reasons for making this change:
Years ago,
Icon^M^Mwas added as a macOS rule. This gets parsed asIcon^M, which ignores macOSIcon\r/Icon^Mdirectories.A strange byproduct of this rule is that when Ripgrep's commonly used
ignorecrate parses gitinore rules, it strips trailing whitespace that is not a literal space character.This means that if you have the current
Icon^M^Mrule in your global gitignore tool, Ripgrep, and any Rust-based directory scanning tool that uses theignorecrate, will be unable to see any directory namedIcon— which happens to occur frequently in React codebases.This change switches to using a character class like
[^M](literal CR surrounded by square brackets).This prevents the rule from ending in whitespace, and thus makes
Icondirectories visible to Ripgrep and Rust-based directory scanning tools again.Why not change Ripgrep
This is old code in Ripgrep, and is widely deployed. It also seems reasonable to see a carriage return at the end of a gitignore rule as not part of the rule. What Ripgrep/ignore is doing is fairly reasonable. Having a
.gitignoreline that ends in two\r\ris pretty odd. I think the character class solution with brackets is a reasonable solution.