Re: Choosing regex delimiters

I changed the double-quotes to single-quotes and got a reasonable result. Which to me suggests that the shell does some processing with double-quoted strings before it reaches perl

Whatever shell you are using, try this:

> echo 'hello $1'
hello $1
> echo "hello $1"
hello
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Re^2: Choosing regex delimiters by JavaFan (Canon) on Feb 06, 2009 at 16:42 UTC
Which to me suggests that the shell does some processing with double-quoted strings before it reaches perl That depends on the shell. Typically, Unix shells with do interpolation (including `` expanding) inside double quoted strings, and no interpolation inside single quoted string. It's my understanding that you only have double quoted strings on most Windows shells (not counting shells that started life on Unix, then got ported). No idea whether they do interpolation or not.	[reply]
Re^3: Choosing regex delimiters by jethro (Monsignor) on Feb 06, 2009 at 17:15 UTC
Naturally. Not knowing the shell he uses I gave him a pointer where to look. Probably should have said 'my shell' instead of 'the shell'. Whatever shell he is using, there should be a mechanism to avoid interpolation, often single quotes or generous use of backward slashes. Do backward slashes work on windows? I never checked.	[reply]
Re^4: Choosing regex delimiters by JavaFan (Canon) on Feb 06, 2009 at 17:41 UTC
Whatever shell he is using, there should be a mechanism to avoid interpolation That's only needed if said shell actually does have interpolation ;-)	[reply]