How to escape a portion of a string in regular expressions

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Max Heimann
Max Heimann 2022-3-21
评论： Max Heimann 2022-3-21
Hello,
i want to dynamically create a regular expression from an input string. However i only want a small subset of expressions to be treated as such. Most of the input shall be treated as literal (e.g. dots '.' shall actually be treated as dots and not wildcards)
Is there a way to escape a whole group/substring when defining a regexp, or is the only way to escape all special chars, except the ones i want to keep, manually. If i need to escape everything manually, is there a syntax/keyword which gets me all special chars in the string so i can escape all of them?
Example (dots shall be treated as literal dots):
>> r = myfun('a.b.c','a.b.')
r = 1
>> r_myfun('aXb.c','a.b.')
r = []
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Max Heimann
Max Heimann 2022-3-21
Thats also great, but i need it to work in an earlier version than 2020.

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采纳的回答

Walter Roberson
Walter Roberson 2022-3-21
https://www.mathworks.com/help/matlab/ref/regexptranslate.html
regexptranslate with the 'wildcard' option, perhaps?
  1 个评论
Max Heimann
Max Heimann 2022-3-21
This is great, thank you. I think i can work with this and use the 'escape' option. Afterwards i can look for the escaped versions of the patterns i want to match and de-escape them.

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