> On Jun 1, 2020, at 23:32, 'anotherhoward' via BBEdit Talk 
> <[email protected]> wrote:
> 
> What if I wanted to extract all the text up to, but not including, the left 
> parenthesis?

Then you need to check that the left parenthesis is ahead of the stuff you need 
to match. So it's a "lookahead is there's a left parens!":

^.+(?=\()

And if you want to *extract* the stuff that matches, you have a cute "Extract" 
button in the Search dialog to do that.

The manual is of tremendous help too.

-- 
Jean-Christophe Helary @brandelune
http://mac4translators.blogspot.com


> 
> On Monday, June 1, 2020 at 9:49:58 AM UTC-4, Jean-Christophe Helary wrote:
> 
> 
>> On Jun 1, 2020, at 21:31, Howard <[email protected]> wrote: 
>> 
>> Here is an input sample: 
>> 
>> Arizona (5) 
>> Minnesota (4) 
>> Cleveland (2) 
>> San Diego (4) 
>> 
>> Using Grep, I want to remove all the text in each item from the left 
>> parenthesis on. How can I do that? 
> 
> including the left parenthesis: 
> search for \(.+$ 
> replace with nothing 
> 
> excluding the left parenthesis: 
> search for (?<=\().+$ 
> replace with nothing 
> 
> The "exclusion" uses a "lookbehind" match as in "look behind this to see if 
> the rest matches, but only act on the rest". So here, it says "look behind a 
> left parenthesis see if you find anything" 
> 
> 
> -- 
> Jean-Christophe Helary @brandelune 
> http://mac4translators.blogspot.com 
> 
> 
> -- 
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