Extends the configuration with a regexp key that supports fixed|basic|extended|perl as values. These map to the grep options that enable each kind of regexp. See Matcher Selection in grep(1) for more details. (I didn't realize the docs called this "Matcher" until just now, so maybe matcher would be a better name?)
The default is extended to maintain the behavior from before this change. I find that odd, since basic is grep's own default, but I don't think we can change it now.
Extends the configuration with a
regexp
key that supportsfixed|basic|extended|perl
as values. These map to thegrep
options that enable each kind of regexp. See Matcher Selection in grep(1) for more details. (I didn't realize the docs called this "Matcher" until just now, so maybematcher
would be a better name?)The default is
extended
to maintain the behavior from before this change. I find that odd, sincebasic
isgrep
's own default, but I don't think we can change it now.Implements #18.