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Hi, I came to CotEditor because I wanted a text editor that had a regex engine with granular support for unicode properties. Very pleased with CotEditor's implementation of the ICU Regex engine. I'm playing around with find and replace and testing out different regex strings. What do the colors mean when using Find All or Highlight All? At first I thought each capture group gets its own color, but playing around more I'm puzzled at the difference of the highlight colors when comparing the text editor window and the highlights of matches in the find and replace modal window. I did check the help files and searched issues, discussions,and wiki here on github, didn't see what I was looking for. Could someone explain this?
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Your interpretation is correct. The reason the first The highlighting of the CotEditor’s search results automatically generates color variations based on the number of capture groups used in the regular expression pattern. Each capture group is assigned a different color.
Indeed, the bundled user guide doesn’t provide an explicit explanation of the highlight colors used for text search. |
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Silly me. Thanks for confirming, and I appreciate you updating the documentation. It's an adjustment using Cot Editor. I would appreciate if you would include what substitution meta works and does not work. For example, looks like \L \U are treated as literal strings. A huge bummer, I love being able to manipulate casing easily. I can select my matches and do Text > Transformations for now. Could you add one for sentence case? |
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As it is described in the regex quick help, CotEditor uses the ICU-compatible regex library. So please refer to the guide on ICU. To make it clearer, I’ve updated the bundled user guide in the next version. 
Unlike simple uppercase, lowercase, and capitalization, sentence cases are very difficult to determine mechanically because they are (natural) language-dependent. Apple doesn’t provide a dedicated API for this purpose either. Consequently, CotEditor has opted not to implement commands for sentence case transformation. |
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Your interpretation is correct.
The highlight colors in the result view in the Find window and the editor must be the same.
The reason the first
abcdefhijis single-colored in the screenshot you provided is that the substring is selected in the editor, and the background color of the selection takes precedence.When deselected it, the highlight should match the color displayed in the results view of the Find window.
The highlighting of the CotEditor’s search results automatically generates color variations based on the number of capture groups used in the regular expression pattern. Each capture group is assigned a different color.
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