Fix bug where a lone '.' was scoped as a decimal point; closes #10

fish.YAML-tmLanguage

@@ -849,7 +849,7 @@ repository:
     patterns:
       - comment: Treat a sequence of integers (with possible decimal separator) as a standalone constant. Do this separate to string-unquoted-pattens so we can ensure it is a string solely of numbers
         name: meta.string.unquoted.fish constant.numeric.fish
-        match: (?:[0-9\.]+)(?=[\s;&)|<>'"])
+        match: (?:[0-9]+\.?[0-9]*|[0-9]*\.?[0-9]+)(?=[\s;&)|<>'"])
 
       - name: meta.string.unquoted.fish
         begin: (?!['"])
@@ -902,7 +902,7 @@ repository:
           - comment: Manually recreate the #string rule with extra logic in unquoted strings, and don't repeat the meta.string.unquoted scope
           - include: '#string-quoted'
           - name: constant.numeric.fish
-            match: (?:[0-9\.]+)(?=[\s;&)|<>'"]|\}|\,)
+            match: (?:[0-9]+\.?[0-9]*|[0-9]*\.?[0-9]+)(?=[\s;&)|<>'"]|\}|\,)
           - begin: (?![\s'"])
             end: (?=[\s;&)|<>'"]|\}|\,)
             comment: Begin/end string as before with the addition of breaking at a '}' or ','

fish.tmLanguage

@@ -2111,7 +2111,7 @@
 					<key>comment</key>
 					<string>Treat a sequence of integers (with possible decimal separator) as a standalone constant. Do this separate to string-unquoted-pattens so we can ensure it is a string solely of numbers</string>
 					<key>match</key>
-					<string>(?:[0-9\.]+)(?=[\s;&amp;)|&lt;&gt;'"])</string>
+					<string>(?:[0-9]+\.?[0-9]*|[0-9]*\.?[0-9]+)(?=[\s;&amp;)|&lt;&gt;'"])</string>
 					<key>name</key>
 					<string>meta.string.unquoted.fish constant.numeric.fish</string>
 				</dict>
@@ -2218,7 +2218,7 @@
 						</dict>
 						<dict>
 							<key>match</key>
-							<string>(?:[0-9\.]+)(?=[\s;&amp;)|&lt;&gt;'"]|\}|\,)</string>
+							<string>(?:[0-9]+\.?[0-9]*|[0-9]*\.?[0-9]+)(?=[\s;&amp;)|&lt;&gt;'"]|\}|\,)</string>
 							<key>name</key>
 							<string>constant.numeric.fish</string>
 						</dict>

syntax_test_fish.fish

@@ -111,6 +111,13 @@ echo str1 2 3str -b"str" --num=2
 #!                       ^^^^^^ meta.string.unquoted
 #!                             ^ constant.numeric
 
+echo 1 1.2 .3 4. .
+#!   ^ constant.numeric
+#!     ^^^ constant.numeric
+#!         ^^ constant.numeric
+#!            ^^ constant.numeric
+#!               ^ - constant.numeric
+
 cmd -a --arg -- -- -h # comment
 #!  ^^ variable.parameter
 #!     ^^^^^ variable.parameter
@@ -620,11 +627,12 @@ echo $var $var[$var[1 $var[1]] $var[1..2]] "str"
 #!                    ^^^^ meta.brackets.index-expansion meta.brackets.index-expansion variable.other
 #!                                         ^^^^^ string.quoted
 
-echo $$var[ 1 ][ 1 ]
+echo $$var[ 1 ][ 1 ] $var[1.2]
 #!   ^^^^^^^^^^^^^^^ meta.variable-expansion
 #!    ^^^^ variable.other
 #!        ^^^^^ meta.brackets.index-expansion
 #!             ^^^^^ meta.brackets.index-expansion
+#!                        ^^^ - constant.numeric
 
 echo $var[(echo 1)] $var["2"] "str"
 #!   ^^^^ variable.other
@@ -678,6 +686,12 @@ echo $var{,'brace',"expansion",he{e,$e}re\,}"str"
 #!                                         ^ punctuation.section.braces.end
 #!                                          ^^^^^ string.quoted
 
+echo 1{1.2,2a}3
+#!   ^ - constant.numeric
+#!     ^^^ constant.numeric
+#!         ^ - constant.numeric
+#!            ^ - constant.numeric
+
 echo %"fish" one%two %%percent
 #!   ^^^^^^^ meta.process-expansion
 #!   ^ punctuation.definition.process