Re: Is there a way make the lex program match multiple line?

I rewrite, and I think the [']([^']|\n)['] should be [']([^']|\n)+[']
Thanks very much!

Yours,
Wen Yi.

 

------------------ Original ------------------
From: "Tom Lane" <tgl(at)sss(dot)pgh(dot)pa(dot)us&gt;;
Date:&nbsp;Sun, Jun 18, 2023 09:50 AM
To:&nbsp;"Wen Yi"<896634148(at)qq(dot)com&gt;;
Cc:&nbsp;"pgsql-general"<pgsql-general(at)lists(dot)postgresql(dot)org&gt;;
Subject:&nbsp;Re: Is there a way make the lex program match multiple line?

"=?ISO-8859-1?B?V2VuIFlp?=" <896634148(at)qq(dot)com&gt; writes:
&gt; Can someone give me some advice to make the ['].+['] match multiple string?

You should check the flex manual, but it's likely that "." doesn't
match newline.&nbsp; Another problem with this pattern is that "."
*does* match "'", so it's ambiguous what will happen with quotes.
You probably need something closer to [']([^']|\n)[']

regards, tom lane