问题
I'm trying to create a case insensitive regex query in Google Spreadsheets with the regexreplace function. Is that possible? I've tried the \i flag and got a #REF error saying the expression was invalid: =regexreplace("Test","t\i","") gives an error when I would hope to get "es" as the final result.
Is it possible? Is there a flag for case sensitivity in Google Spreadsheets?
Thanks in advance!
回答1:
AFAIK, the only way to enable case-insensitive matching is JavaScript API in google docs.
Apparently, RE2 syntax does support the inline (?i) case-insensitive modifier:
=REGEXREPLACE("Test", "(?i)t", "")
An alternative that will work is using a Character class, adding both cases of the letter T..
=REGEXREPLACE("Test", "[Tt]", "")
回答2:
I found this:
=REGEXREPLACE("Test","(?i)t","")
It returns what you want
es
google/re2
回答3:
As Alexander Ivanov wrote,
Yes, I'm understand that this topic has resolved. But I found something fancy!
=REGEXREPLACE("Test","(?i)t","") It returns what you want
es
P.S.: Please, if somebody knows why it works then comment.
Google uses their own re2 regular expressions engine. Using (?i) is allowing you to set the flags for case insensitive search https://re2.googlecode.com/hg/doc/syntax.html
回答4:
There is NO flag for case sensitivity If you have a longer string and you want to make it case insensitive you cold try use a lowercase regular expression and make your test lowercase usign the function lower: =REGEXREPLACE(LOWER(string), regex_in_lowercase, replacement) in your specific case: =REGEXREPLACE(LOWER("test"), "t", "") The problem is that a capture expression with be in lowercase! source: https://productforums.google.com/forum/#!topic/docs/7kNb9LGeIfM
来源：https://stackoverflow.com/questions/24644243/google-spreadsheets-regex-case-insensitive-regexreplace