Regex match up to first PRECEDING space from character -


i have snippet here

agent=mozilla/5.0 (windows nt 6.0; wow64; trident/6.0; rv:11.0) gecko custom1=custom1 custom2=custom2 more=otherstuffi dont care etc

what want regex matches here

agent=mozilla/5.0 (windows nt 6.1; wow64; trident/7.0; rv:11.0) gecko

i have tried this:

agent=(.*?=)

which gives me:

agent=mozilla/5.0 (windows nt 6.0; wow64; trident/6.0; rv:11.0) gecko custom1=

but custom1 fewer or more chars sometimes.. don't want specific want before space between gecko , custom if browser/os isn't exact might not gecko. feel best way use next = (after custom1) since there.

so if can custom1= agent , match whats before space before custom1, work.

or on complicating this?

thanks.

i suggest following:

agent=([^=]*)(?=\s)

this match many characters besides = can, stop before final space.

test live on regex101.com.


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