PHWinfo - Afficher un message - sed: How do you match a string containing square brackets AND hyphens?

23/08/2006, 16h00

The streaming editor (sed) allows us to use the metacharacters "[" and
"]" to match any one of a number of characters. According to the
Pattern Matching chapter in O'Reilly's book Unix in a Nutshell by
Daniel Gilly, "A hyphen or close bracket (]) as the first character is
treated as a member of the list."

That's great, but what if I need to match a string that may contain
brackets AND hypens?

I need to match a C++ variable name or constant that may include any of
these characters:
A-Z
a-z
0-9
- (hypen)
_ (underscore)
> (as in ->)
[ and ]
.. (dot)

Here is what I'd like to be able to do:
s/something\([A-Za-z0-9_->\[\]\.]*\)the_rest/something_else \1
the_rest/

That does not work.

What can I do?

Why is simply escaping the [ and ] characters in the list not good
enough?

23/08/2006, 16h00	#1
Dave S. Messages: n/a Hébergeur:	sed: How do you match a string containing square brackets AND hyphens? The streaming editor (sed) allows us to use the metacharacters "[" and "]" to match any one of a number of characters. According to the Pattern Matching chapter in O'Reilly's book Unix in a Nutshell by Daniel Gilly, "A hyphen or close bracket (]) as the first character is treated as a member of the list." That's great, but what if I need to match a string that may contain brackets AND hypens? I need to match a C++ variable name or constant that may include any of these characters: A-Z a-z 0-9 - (hypen) _ (underscore) > (as in ->) [ and ] .. (dot) Here is what I'd like to be able to do: s/something\([A-Za-z0-9_->\[\]\.]*\)the_rest/something_else \1 the_rest/ That does not work. What can I do? Why is simply escaping the [ and ] characters in the list not good enough?