Slight imprecision in documentation

[Massimo Masotti]

Hello,

I'm referring to version 4.2.2. I noticed a slight imprecision in the 
documentation at 
"http://www.gnu.org/software/sed/manual/html_node/Regular-Expressions.html";.

Using sed to get a list of compressed files from the attached 
"from.htm", I cannot get the substitutions with:

    sed 
's/.*\(http:\/\/xorg.freedesktop.org\/releases\/individual\/lib\/[^"]*\.tar\.(gz\|bz2)\).*/\1/g' 
from.htm >to.htm

Instead, I must use this:

    sed 
's/.*\(http:\/\/xorg.freedesktop.org\/releases\/individual\/lib\/[^"]*\.tar\.\(gz\|bz2\)\).*/\1/g' 
from.htm >to.htm

So, I think the documentation should be updated from:

regexp1|\||regexp2
   Matches either regexp1 or regexp2. Use parentheses to use complex
   alternative regular expressions. The matching process tries each
   alternative in turn, from left to right, and the first one that
   succeeds is used. It is a GNU extension.

to:

regexp1|\||regexp2
   Matches either regexp1 or regexp2. Use escaped parentheses to use
   complex alternative regular expressions. The matching process tries
   each alternative in turn, from left to right, and the first one that
   succeeds is used. It is a GNU extension.


I apologize if I'm wrong.

My Best Regards.


Massimo Masotti - Italy

from.htm
Description: Text document