Re: [F.J.Wright@qmul.ac.uk: rcs2log]

["Dr Francis J. Wright" <F.J.Wright@qmul.ac.uk>]

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From: "Eli Zaretskii" <eliz@is.elta.co.il>
To: <F.J.Wright@qmul.ac.uk>
Cc: <emacs-devel@gnu.org>
Sent: Tuesday, October 29, 2002 7:50 PM
Subject: Re: [F.J.Wright@qmul.ac.uk: rcs2log]


> > From: "Dr Francis J. Wright" <F.J.Wright@qmul.ac.uk>
> > Date: Tue, 29 Oct 2002 17:06:27 -0000
> >
> > One is Eli's suggestion, namely a more sophisticated replacement for my
> > rcs2log.bat file that deduces the correct search path to use for sort.
> > Clearly this should not use any non-standard Windows technology other
than
> > what is necessary anyway to run rcs2log.
>
> None is needed.  You can iterate thru PATH with a FOR builtin, for
> example.


I think that's probably overkill.  Here is a simpler approach that seems to
work well for me.  It requires only that a suitable sh program is found in
the search path used within Emacs.  If the environment variable VC_SORT_PATH
is set to a search path appropriate to the sh program then it is prepended
to PATH; otherwise /bin is prepended to PATH.  In a reasonably recent
default Cygwin installation, sort is in /bin (and Cygwin knows where its own
root directory is within the Windows file system).  Hence I think this
should work correctly by default for most users of Cygwin and probably any
other sensible UNIX-like environment.  If it doesn't then the user can
specify an appropriate search path by setting VC_SORT_PATH.  This could in
fact be used to specify the location of any of the programs run by rcs2log,
although I think only sort clashes with the name of a standard Windows
program and on my system they are all in /bin.  (In fact, they appear to be
in /usr/bin, but /bin is mounted on /usr/bin by default and the files are
physically in /bin.)

Francis

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