[10236] in Athena Bugs
decmips 7.4G: csh
daemon@ATHENA.MIT.EDU (gptesler@Athena.MIT.EDU)
Sun Jan 31 10:10:43 1993
From: gptesler@Athena.MIT.EDU
To: bugs@Athena.MIT.EDU
Date: Sun, 31 Jan 93 10:10:38 EST
System name: w20-575-41
Type and version: KN02ca 7.4G
Display type: PMAG-DV
What were you trying to do?
Get the tail of the name used to call a script.
What's wrong:
$0:t and ${0:t} do not give the tail of the name.
If the name were "/mit/gptesler/blah/foo", $0:t would
yield "/mit/gptesler/blah/foo:t" and ${0:t} would
print "Variable syntax."
If this were the first argument to the script, however,
both $1:t and ${1:t} would return the correct answer, "foo".
I can bypass the problem by doing something like
set progname=$0
and then using $progname:t to get the tail.
Similar problems occur with other colon modifiers on argument 0.
What should have happened:
The modifiers should work as documented in the csh man page.
Please describe any relevant documentation references:
The csh man page describes various metasequences
$name ${name} $name[selector] ${name[selector]}
$#name ${#name} $0 $number ${number} $*
and then says
> The modifiers `:h', `:t', `:r', `:q' and `:x' may be applied to the sub-
> stitutions above as may `:gh', `:gt' and `:gr'. If braces `{' '}'
> appear in the command form then the modifiers must appear within the
> braces.
It then continues on to describe sequences which may not be modified
with colon modifiers,
$?name ${?name} $?0 $$ $<
