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Why does BASH_REMATCH not work for a quoted regular expression? 14 Thanks to your debugging statement, echo The regex matches!, you should have noticed there is no problem with BASH_REMATCH, since the if statement evaluates to false In bash, regular expressions used with =~ are unquoted If the string on the right is quoted, then it is treated as a string literal
regex - BASH_REMATCH empty - Stack Overflow Note, however, that if =~ signals success, BASH_REMATCH is never fully empty: at the very least - in the absence of any capture groups - ${BASH_REMATCH[0]} will be defined
How do I extract a string using a regex in a shell script? So in this case ${BASH_REMATCH[1]} will contain "www google com", which I think is the string you want Note that the contents of the BASH_REMATCH array only apply to the last time the regular expression =~ operator was used So if you go on to do more regular expression matches, you must save the contents you need from this array each time
What is the zsh equivalent for $BASH_REMATCH []? The manual says about BASH_REMATCH: When set, matches performed with the =~ operator will set the BASH_REMATCH array variable, instead of the default MATCH and match variables The first element of the BASH_REMATCH array will contain the entire matched text and subsequent elements will contain extracted substrings
bash - Capturing Groups From a Grep RegEx - Stack Overflow The results of the match are saved to an array called $BASH_REMATCH The first capture group is stored in index 1, the second (if any) in index 2, etc Index zero is the full match
regex - Match groups in Python - Stack Overflow Is there a way in Python to access match groups without explicitly creating a match object (or another way to beautify the example below)? Here is an example to clarify my motivation for the quest
Multiple matches in a string using regex in bash - Stack Overflow The regex you supply would match the first item DO-BATCH with ${BASH_REMATCH[1]} == DO and ${BASH_REMATCH[2]} as BATCH, but you would have to run the regex again against the remaining string to get the second value BATCH-DO
regex - Why does BASH_REMATCH return empty when the script file is . . . Matched BAR But if I source the script, cutescript sh, then it still matches, but BASH_REMATCH[1 is empty Wat I'm on MacOS Catalina 10 15 7 (19H2), executing this in zsh, but with the bash shebang Can anyone explain this irregularity?