From: Eric Hodel <drbrain@...7.net>
Date: 2003-11-11T14:27:27-08:00
Subject: Re: Backslash substitution question

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Ron Coutts (rcoutts@envistatech.com) wrote:

> I'm having trouble with backslashes and I don't know what is wrong.  I
> can't seem to write and expression that will evaluate to a string
> containing a single backslash character as in "\".  It seems that "\\"
> in Ruby evaluates to "\\" not to "\" as I would expect.  Below are a few
> things I've tried.  If anyone could send back a quick answer it would be
> much appreciated.
>=20
> res =3D "c:/foo/bar".gsub(/\//, "\\")   # -> c:\\foo\\bar
> res =3D "c:/foo/bar".gsub(/\//, '\\')   # -> c:\\foo\\bar
> #res =3D "c:/foo/bar".gsub(/\//, "\")   # -> syntax error - unterminated
> string meets end of file
> #res =3D "c:/foo/bar".gsub(/\//, '\')   # -> syntax error - unterminated
> string meets end of file
> res =3D "c:/foo/bar".gsub(/\//) { "\\"} # -> c:\\foo\\bar

Ruby maps between / and \ in filenames on win32 just fine, why not let
it do the work for you?  For cmd.exe, it doesn't cane if you give it \
or /, but tab completion doesn't work on /.  (I believe I read somewhere
that the guts don't care, since back in the DOS days, but my mind could
be addled).

See also File.join and File.expand_path

--=20
Eric Hodel - drbrain@segment7.net - http://segment7.net
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