Re: maintaining init files on a [t]csh influenced system

[Zefram <A.Main@xxxxxxxxxxxxxxxxx>]

>
>On Sep 6, 10:16am, Toshi Isogai wrote:
>} Subject: Re: maintaining init files on a [t]csh influenced system
>}
>} On Wed, 6 Sep 1995, Andrew Eskilsson wrote:
>} 
>} > Are there any possibilities to let zsh run the global [csh] files and
>} > incorporate the freshly set variables into the shell?
>} 
>} I am in the same situation and what I did was setting my login
>} shell back to csh and at the end of my .cshrc (or .login) I added
>} 
>} 	exec zsh
>
>Yup, I do the same thing.  Proper startup of the IRIX 4 desktop is pretty
>heavily wired into having csh (or sh) as your login shell.  My .cshrc on
>IRIX 4 machines actually looks (in part) like this:
>
>###
>
># Figure out if this login is from XDM on the console
>setenv TTY "`tty`"
>if ($?DISPLAY) then
>    if ($DISPLAY == :0) then
>	if (! $?CONSOLE_LOGIN) then
>	    setenv CONSOLE_LOGIN "$TTY"
>	endif
>    endif
>    setenv WINTERM xterm
>    setenv XHOST `hostname`
>endif
>if ($?CONSOLE_LOGIN) then
>    if ("$CONSOLE_LOGIN" != "$TTY") then
>	unsetenv CONSOLE_LOGIN
>    endif
>endif
>
># If this is not the XDM console and is interactive, run zsh
>if (! $?CONSOLE_LOGIN && $?prompt) then
>    if (! $?SHLVL) then
>	exec /usr/local/bin/zsh -l
>    else
>	exec /usr/local/bin/zsh
>    endif
>endif
>
>###
>
>On the original question, though -- there are two major syntactic barriers
>to getting zsh to parse csh script files:
>
>1.  "set" commands, because they can do any of:
>    a.  assign to multiple boolean options in a single command
>    b.  mix assignments of option variables with string assignments
>    c.  use spaces around the "=" sign in any string assignment
>
>	set noclobber history = 50 nonomatch prompt="`hostname`: "
>
>2.  the "$?variable" syntax for testing whether a variable is set
>
>You can get zsh to parse just about everything else (*) by clever use of
>aliases and zsh functions, but I haven't figured out a workaround for
>either of the above.
>
>(*) "switch" statements are VERY entertaining, but possible (I think);
>    anybody care to guess how?
>
>-- 
>Bart Schaefer                     Vice President, Technology, Z-Code Software
>schaefer@xxxxxxxxxx                  Division of NCD Software Corporation
>http://www.well.com/www/barts
>