Bug #19881: Unary operators on calls without parentheses

• Status: Rejected
• Assignee: -
• Target version: -
• Backport: 3.0: UNKNOWN, 3.1: UNKNOWN, 3.2: UNKNOWN

[kddnewton (Kevin Newton)]

At the moment it appears that you can't use unary operators when you have a call without parentheses. For example:

- foo 1, 2, 3

This seems useful, particularly for methods that perform calculations.

I'm also asking because I thought this was allowed, so YARP allows it. If it's not, I need to explicitly add a syntax error for it.

[mame (Yusuke Endoh)]

My uncertain understanding is that an expression (called "arg" in parse.y) must come after the unary minus. Since foo 1, 2, 3 is not an expression but a statement (called "command" in parse.y), - foo 1, 2, 3 is not acceptable.

[kddnewton (Kevin Newton)]

• Status changed from Open to Rejected