[Tcsh] tcsh 6.24: broken escape handling

[H.Merijn Brand]

On Tue, 29 Nov 2022 11:42:23 +0100, Corinna Vinschen <vinschen at redhat.com> wrote:

> On Nov 29 11:22, Corinna Vinschen wrote:
> > Hi,
> > 
> > 
> > I found a problem with ESC handling in tcsh 6.24.  Consider this
> > example: I have a machine called "pinky" and I'd like to see the machine
> > name in the terminal header, so basically I perform this command via
> > .login:
> > 
> >   echo "\033]0;pinky\007\c"
> > 
> > With tcsh 6.22 I'm getting the desired result:
> > 
> >   $ echo "\033]0;pinky\007\c"   [window title changes]
> >   $ 
> > 
> > While with tcsh 6.24 the title still changes, there's something broken:
> > 
> >   $ echo "\033]0;pinky\007\c"   [window title changes]
> >   "
> >   $
> > 
> > That's with version 6.24.01 as well as with 6.24.02.  On Linux
> > I always get a quotation mark, on Cygwin the output is often a
> > quotation mark, sometimes random garbage.  The output depends
> > on the string to print, but it always contains at least one LF:
> > 
> >   $ echo "\033]0;pin\007\c"   [window title changes]
> >   
> >   $
> > 
> > Sorry for noticing this problem so late, but I'm neither running this
> > sequence by default on Cygwin, nor on Linux.  It occured to me only
> > because I updated a seldomly used laptop lately, called pinky, FWIW :}  
> 
> I bisected the problem and it looks like this commit is the culprit,
> introducing this problem for the first time:
> 
>   06915a414e18 echo parse escape enhancements (H.Merijn Brand)

% grep cwdcmd ~/.tcshrc | cat -ve
        alias cwdcmd 'glob "^[]0;'${LOGNAME}'@'${HOST}':$cwd ['$$':'$tty']^G"'$

^^^ That still works

> Corinna

-- 
H.Merijn Brand  https://tux.nl   Perl Monger   http://amsterdam.pm.org/
using perl5.00307 .. 5.37        porting perl5 on HP-UX, AIX, and Linux
https://tux.nl/email.html http://qa.perl.org https://www.test-smoke.org
                           
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