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whence -a: fix spurious 'undefined function' message

Browse source 
$ ksh -c 'whence -a printf'
	printf is a shell builtin
	printf is /usr/bin/printf
	printf is an undefined function

The third line should not appear.

src/cmd/ksh93/bltins/whence.c:
- Remove faulty extra check for undefined (= autoload) functions.
  This was already handled earlier, on lines 192-193.

src/cmd/ksh93/tests/builtins.sh:
- Add regression test.
- For previous 'whence -a' test, don't bother with shell function.

Fixes https://github.com/ksh93/ksh/issues/26
This commit is contained in:
Martijn Dekker 2020-07-20 16:49:17 +01:00
parent b2bdbef561
commit 01c25cb14b
2 changed files with 13 additions and 8 deletions
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2
src/cmd/ksh93/bltins/whence.c
View file

@ -250,8 +250,6 @@ static int whence(Shell_t *shp,char **argv, register int flags)
const char *command_path = np->nvalue.pathcomp->name;
sfprintf(sfstdout,"%s %s %s/%s\n",name,sh_translate(is_talias),command_path,cp);
}
else if(!np || nv_isnull(np))
sfprintf(sfstdout,"%s%s\n",name,sh_translate(is_ufunction));
continue;
}
sfputr(sfstdout,sh_fmtq(name),' ');

19
src/cmd/ksh93/tests/builtins.sh
View file

@ -732,20 +732,27 @@ foo=BUG command eval ':'
[[ $foo == BUG ]] && err_exit '`command` fails to disable the special properties of special builtins'
# ======
# `whence -a` should not base the path of tracked aliases on the current directory
run_whence()
{
whence -a chmod >> /dev/null
# 'whence -a' tests
# wrong path to tracked aliases after loading builtin: https://github.com/ksh93/ksh/pull/25
actual=$("$SHELL" -c '
whence chmod >/dev/null # add to hash table (create tracked alias)
builtin chmod
whence -a chmod
}
actual="$(run_whence)"
')
expected="chmod is a shell builtin
$(whence -a -p chmod | sed 's/^/chmod is /')
chmod is a tracked alias for $(whence -p chmod)"
[[ $actual == $expected ]] || err_exit "'whence -a' does not work correctly with tracked aliases" \
"(expected $(printf %q "$expected"), got $(printf %q "$actual"))"
# spurious 'undefined function' message: https://github.com/ksh93/ksh/issues/26
actual=$("$SHELL" -c 'whence -a printf')
expected="printf is a shell builtin
$(whence -a -p printf | sed 's/^/printf is /')"
[[ $actual == $expected ]] || err_exit "'whence -a': incorrect output" \
"(expected $(printf %q "$expected"), got $(printf %q "$actual"))"
# ======
# 'cd ../.foo' should not exclude the '.' in '.foo'
(