Forfiles and escape char

[darioit]

Hello,
this string works fine in dos shell

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curl --request POST "https://somesite/access_token" --user user:pass | grep -o -P -e "(?<=\"access_token\":\").+?(?=\")"

but If I try this:

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for /f %%a in ('curl --request POST "https://somesite/access_token" --user user:pass ^| grep -o -P -e "(?<=\"access_token\":\").+?(?=\")"') do set "TOKEN=%%a"

I got this error
.+?(? was unexpected at this time.

any idea? Thanks

[aGerman]

If I count the quotes then it seems that the closing parenthesis right before the point is neither escaped nor quoted. I suspect it is treated as to be closing the FOR clause. Try to escape it with a caret. Probably the equal sign, too.
Something like that for the regex pattern ...

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"(?<=\"access_token\":\"^).+?(?^=\")"

Steffen

[darioit]

Thank you Steffen, always the best!

I try only 1 caret before parentesis, but not before equal