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Re: Unable to use Cygwin RCS commands in Windows Emacs

On 2017-09-20 14:12, Heinz Werner Kramski-Grote wrote:
> At some point in history, /usr/bin/co, /usr/bin/ci, /usr/bin/rlog etc. turned 
> from .exe into shell scripts, which are now wrappers for the main program 
> /usr/bin/rcs.exe. 
> However, these shell scripts can not be called directly from a Windows command 
> line and moreover can not be invoked by a Windows (not Cygwin) Emacs (25.2 
> currentlly).
> Windows Emacs expects external Windows commands/binaries like co, ci, rlog, 
> etc.  to exist somewhere in the PATH. The commands to be invoked for version 
> control with RCS are hardcoded into "C:\Program Files\emacs-25.2\share\emacs
> \25.2\lisp\vc\vc-rcs.el" and can not be customized, as far as I know.
> I tried to create wrapper scripts for Windows too (co.cmd, ci.cmd etc. -  
> basically just "c:\cygwin\bin\bash -c '/bin/%~n0 %*'"), which work to some 
> extend on the Windows command line, but mostly fail when invoked from Emacs' 
> version control functions.
> The most recent native Windows port of RCS I could find is version 5.7 and 
> dates back to 1999. In addition, it uses filenames like "RCS/somefile" instead 
> of the usual "RCS/somefile,v", so this does not look like a way to go either. 
> I'm clueless now. Does someone successfully use Cygwin's RCS commands in 
> Windows Emacs? Is there still an older Cygwin RCS package around which 
> contains "real" co.exe, ci.exe etc.? 
> Any help is greatly appreciated.

Tried creating shortcuts to the commands in $HOME/bin/, running C:\Cygwin\bin\sh
/bin/cmd %*, and adding $HOME/bin to the start of your Windows PATH?

Take care. Thanks, Brian Inglis, Calgary, Alberta, Canada

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