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fix for parameter length expressions for nameref variables expanding to invalid identifiers

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This commit is contained in:
Chet Ramey
2022-12-13 12:57:47 -05:00
parent 237c32ba16
commit 49918d90cd
12 changed files with 7022 additions and 5351 deletions
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subst.c
+15
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@@ -8068,8 +8068,23 @@ parameter_brace_expand_length (name)
else if ((var || (var = find_variable (name + 1))) &&
invisible_p (var) == 0 &&
array_p (var) == 0 && assoc_p (var) == 0 &&
nameref_p (var) == 0 &&
var->dynamic_value == 0)
number = value_cell (var) ? MB_STRLEN (value_cell (var)) : 0;
else if ((var = find_variable_last_nameref (name + 1, 0)) && nameref_p (var))
{
/* nameref that resolves to unset variable or non-identifier */
newname = nameref_cell (var);
if (newname && *newname)
{
newname = (char *)xmalloc (strlen (nameref_cell (var)) + 2);
newname[0] = '#';
strcpy (newname + 1, nameref_cell (var));
if (valid_length_expression (newname))
number = parameter_brace_expand_length (newname);
free (newname);
}
}
else if (var == 0 && unbound_vars_is_error == 0)
number = 0;
else /* ${#PS1} */