Fix number patterns

Fixes #253

Syncs number patterns with ST's core JavaScript syntax.

CoffeeScript.sublime-syntax

@@ -499,26 +499,34 @@ contexts:
  scope: constant.language.null.coffee
 
  numbers:
- - match: \b(0b)([01]+)\b
+ - match: (0b)({{bin_digit}}+)\b
  scope: meta.number.integer.binary.coffee
  captures:
  1: constant.numeric.base.coffee
  2: constant.numeric.value.coffee
- - match: \b(0o)([0-7]+)\b
+ - match: (0o)({{oct_digit}}+)\b
  scope: meta.number.integer.octal.coffee
  captures:
  1: constant.numeric.base.coffee
  2: constant.numeric.value.coffee
- - match: \b(0x)(\h+)\b
+ - match: (0x)({{hex_digit}}+)\b
  scope: meta.number.integer.hexadecimal.coffee
  captures:
  1: constant.numeric.base.coffee
  2: constant.numeric.value.coffee
- - match: \b\d+(?:(\.)\d*(?:e[-+]?\d+)?|(?:e[-+]?\d+))\b
+ # floats
+ - match: |-
+ (?x:
+ # 1., 1.1, 1.1e1, 1.1e-1, 1.e1, 1.e-1 | 1e1, 1e-1
+ {{dec_integer}} (?: (\.) {{dec_digit}}* (?:{{dec_exponent}})? | {{dec_exponent}} )
+ # .1, .1e1, .1e-1
+ | (\.) {{dec_digit}}+ (?:{{dec_exponent}})?
+ )\b
  scope: meta.number.float.decimal.coffee constant.numeric.value.coffee
  captures:
  1: punctuation.separator.decimal.coffee
- - match: \b\d+\b
+ 2: punctuation.separator.decimal.coffee
+ - match: '{{dec_integer}}\b'
  scope: meta.number.integer.decimal.coffee constant.numeric.value.coffee
 
  triple-double-quoted-strings:
@@ -865,6 +873,13 @@ variables:
  # in embed...escape statements.
  no_escape_behind: (?<![^\\]\\)(?<![\\]{3})
 
+ bin_digit: '[01_]'
+ oct_digit: '[0-7_]'
+ dec_digit: '[0-9_]'
+ hex_digit: '[\h_]'
+ dec_integer: (?:0|[1-9]{{dec_digit}}*)
+ dec_exponent: '[Ee](?:[-+]|(?![-+])){{dec_digit}}*'
+
  identifier: '[[:alpha:]_$]\w*'
 
  component_names: '[A-Z][[:alnum:]_.-]*'

tests/syntax_test_scope.coffee

@@ -547,12 +547,17 @@ class App.Router extends Snakeskin.Router
 
  10.e5
 # ^^^^^ meta.number.float.decimal.coffee constant.numeric.value.coffee
+# ^ punctuation.separator.decimal.coffee
 
- 10.23
+ 10.23 .23
 # ^^^^^ meta.number.float.decimal.coffee constant.numeric.value.coffee
+# ^ punctuation.separator.decimal.coffee
+# ^^^ meta.number.float.decimal.coffee constant.numeric.value.coffee
+# ^ punctuation.separator.decimal.coffee
 
  10.23e-5
 # ^^^^^^^^ meta.number.float.decimal.coffee constant.numeric.value.coffee
+# ^ punctuation.separator.decimal.coffee
 
  52
 # ^^ meta.number.integer.decimal.coffee constant.numeric.value.coffee