DosTips.com

Posted: **16 Sep 2020 04:16**

Hello,
this string works fine in dos shell

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

but If I try this:

Code: Select all

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

Posted: **16 Sep 2020 06:37**

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 ...

Code: Select all

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

Steffen

Posted: **16 Sep 2020 22:37**

Thank you Steffen, always the best!

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

DosTips.com

Forfiles and escape char

Forfiles and escape char

Re: Forfiles and escape char

Re: Forfiles and escape char