Exactly what kind of regular expression search is supported by less (e.g. can I use \d+)?
man less isn't clear on that, and my primarily google on that didn't return much good hit either. Thx.
Less uses the regular expression library which is compiled with your system.
Sometimes you can find out which version it is by using the --version option:
less --version
The first row may tell you what it was compiled with, for example:
less 481 (PCRE regular expressions)
Copyright (C) 1984-2015 Mark Nudelman
less comes with NO WARRANTY, to the extent permitted by law.
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see the file named README in the less distribution.
Homepage: http://www.greenwoodsoftware.com/less
More about the subject here: https://stackoverflow.com/questions/14698364/what-is-the-regular-expression-library-supplied-by-my-system
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