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I am lost with regular expressions. Moerover, it seems that they are various dialects of regular expressions depending of the OS or the programming language you use.<br>
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But I use TeXShop, and today I would only replace \textcolor{red}{some text} by [some text], including the square brackets.<br>
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I have found that in the "find" box, I should type <br>
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<a href="smb://textcolor{red}{(+)}">\\textcolor{red}{(+)}</a><br>
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and in the "replace" box, I should type<br>
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[\1] <br>
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But it doesn't work. <br>
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I get the error message "Invalid regular expression. Target of repeat operator is not specified".<br>
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Can somebody help me? Also, where can I find a good introduction to the subject? In what I find on the Internet, they suppose that you know everything about the subject except the thing they are presently describing. Just like a Chinese grammar written in Chinese.<br>
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Thanks in advance,<br>
<br>
André Bellaïche<br>
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