Re: [PATCH] userdiff: update Ada patterns

[Jeff King <peff@peff.net>]

On Sun, Feb 02, 2014 at 09:21:56PM +1030, Adrian Johnson wrote:

> - Allow extra space in "is new" and "is separate"
> [...]
> -	 "!^(.*[ \t])?(is new|renames|is separate)([ \t].*)?$\n"
> +	 "!^(.*[ \t])?(is[ \t]+new|renames|is[ \t]+separate)([ \t].*)?$\n"

I do not know anything about Ada syntax, but this change looks obviously
sensible.

> - Fix bug in word regex for numbers
> -	 "|[0-9][-+0-9#_.eE]"
> +	 "|[-+0-9#_.eE]+"

This makes "E" or "_" a number. Is that right?

I think the intent of the original was "starts with a digit, and then
has one or more of these other things after it". You do not describe the
bug, but I guess it would be that it does not match obvious things like
"5". Should it be "zero or more" instead, like:

  [0-9][-+0-9#_.eE]*

? Also, should -/+ be hoisted to the front?

  [-+]?[0-9][0-9#_.eE]*

Again, I am just guessing, as I am not familiar enough with Ada.

-Peff