Public bug reported:
tcsh fails to parse null command substitution:
% echo ````
Segmentation fault (core dumped)
%
% echo ````
Segmentation fault (core dumped)
Segmentation fault (core dumped)
%
etc.
Additionally, the shell's own error message is itself written onto
standard output, instead of standard error.
This is a regression. In tcsh-6.10 and earlier versions, the parser
handles null command substitution correctly:
% echo ``
%
This bug has been confirmed to exist in tcsh-6.17.02 in Oneiric. No
further details are currently available.
** Affects: tcsh (Ubuntu)
Importance: Undecided
Status: New
** Tags: parser regression-proposed regression-release tcsh
** Tags added: regression-release
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https://bugs.launchpad.net/bugs/986268
Title:
tcsh segmentation faults in parser on trivial expression
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