Negative Numbers are incorrectly highlighted

[unexceptable]

Prerequisites

• [X] Put an X between the brackets on this line if you have done all of the following:
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  • Followed all applicable steps in the debugging guide: http://flight-manual.atom.io/hacking-atom/sections/debugging/
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Description

Yaml syntax highlighing incorrectly highlights a negative number as a str rather than a number.

Steps to Reproduce

1. open yaml file
2. make key value where value is negative int
3. observer incorrect syntax highlighting

Below used for testing:

some_wrapper:
  positive_int: 1234
  negative_int: -1234
  positive_float: 123.4
  negative_float: -123.4

Expected behavior: Negative numbers should correctly be highlighted as numbers not str.

Actual behavior: Negative numbers are highlighted as strings.

Reproduces how often: 100%

Versions

Atom : 1.23.3 Electron: 1.6.15 Chrome : 56.0.2924.87 Node : 7.4.0

[unexceptable]

@50Wliu ty!

[winstliu]

No problem! This is scheduled for release in Atom 1.26 beta.