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73440[BUG] While skipping eval7() cannot handle dictionaries with keys starting with number correctly

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  • ZyX
    Sep 29, 2013
      Try the following code:

      let d={'0d': 1}
      if 0 && (d.0d)

      . This code is completely correct if you replace `if 0` with `if 1`, but with `if 0` it throws

      Error detected while processing /home/zyx/tmp/vim/subscript-bug.vim:
      line 2:
      E110: Missing ')'
      E15: Invalid expression: 0 && (d.0d)

      . Reason is the following: when `evaluate` argument is set to FALSE in eval7() handle_subscript does not take .0d as dictionary key (because it checks for variable type which is VAR_UNKNOWN if evaluate is FALSE). Thus `.0d` is handled in eval5() like string concatenation and when it tries to evaluate second argument ā€œ0dā€ in eval7() it is handled like number in that big switch(**arg) statement. As a number it can consume only leading zero, which means when eval7() *that is handling top ā€œ(d.0d)ā€ expression* sees that in place of getting **arg equal to ')' it gets **arg equal to 'd' and errors out.

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