Quote:
Originally Posted by mrmikel
100% with theducks. There is NOTHING regular about regular expressions, except it regularly gives you headaches. Sigil regex is not the same as calibre regex, which is not the same as .....!
BTW be very careful that if your search expression contains a period, you are not set to regex. Period means something in regex beyond just a period, unless it is prefaced with a \. You will get interesting or hair-tearing results...I know. I have.
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Calibre editor routinely escapes those for you if you find selected text (ctrl-F) to populate the search box