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trinker/verbatim_dynamic_regex.R

Created March 21, 2018 03:36
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regex: dynamix verbatim
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verbatim_dynamic_regex.R
# test data
before <- "A."
after <- ".Z"
x <- c("A.xyz.Z", "ABxyzYZ")
pattern <- sprintf('(?<=\\Q%s\\E).*?(?=\\Q%s\\E)', before, after)
which gives:
> gregexpr(pattern, x, perl = TRUE) > 0
[1] TRUE FALSE
#from https://stackoverflow.com/a/16225857/1000343
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