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git://git.code.sf.net/p/cdesktopenv/code
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43cd8da2fe
Symptom:
$ ksh -c 'command enum -i P_t=(a b); P_t -A v=([f]=b); typeset -p v'
ksh: syntax error at line 1: `(' unexpected
Expected: no syntax error, and output of 'P_t -A v=([f]=b)'.
src/cmd/ksh93/sh/parse.c: check_typedef():
- For enum, skip over any possible 'command' prefixes before
pre-parsing options with optget (or, technically, skip anything
else that might come before 'enum', though I don't think anything
else is possible).
- The sh_addbuiltin() call at the end to pre-add the builtin
obtained the node pointer to the built-in and the node flags from
the parser tree. This did not work if a 'command' prefix was
present. However, we don't actually need this. For parsing
purposes, the BLT_DCL flag for a declaration built-in is
sufficient; this is what gets the parser to accept
assignment-arguments including parentheses. So just apply that.
In addition, let's point it to an actual dummy built-in, 'true'
(SYSTRUE), so that if a user does run something like 'if false;
then enum Foo_t=(...); fi', the leaked Foo_t dummy at least won't
do anything (not even crash).
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