[Octave-bug-tracker] [bug #47091] string representation of a colon expression may be missing parentheses

[Lachlan Andrew]

Follow-up Comment #3, bug #47091 (project octave):

I don't think this is about the printing, but about the construction of the
parse tree.

First: for functions in files, the parentheses are printed correctly with
"echo on all".

Second:  The printing code starts


tree_print_code::visit_colon_expression (tree_colon_expression& expr)
{
  indent ();

  print_parens (expr, "(");


and print_parens is


tree_print_code::print_parens (const tree_expression& expr, const char *txt)
{
  int n = expr.paren_count ();

  for (int i = 0; i < n; i++)
    os << txt;
}


It seems to me that  num_parens  [the variable behind paren_count()]  isn't
getting set for colon expressions in anonymous functions.

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