[PHP] Improve event/style attribute value contexts (sublimehq#3630)

* [PHP] Exclude prototype from event/style attribute values

This commit excludes `prototype` from event/style attribute values as
those contexts already include inherit syntax which highlights PHP tags
well. Injecting prototype just creates duplicate patterns.

* [PHP] Split strings into -body/-content

This commit makes it easier for inheriting syntax to replace embedded
JavaScript/CSS without duplicating all the basic string patterns.

Author: deathaxe

PHP/PHP.sublime-syntax

@@ -125,53 +125,71 @@ contexts:
         4: comment.block.html punctuation.definition.comment.end.html
 
   tag-event-attribute-value:
+    - meta_include_prototype: false
     - match: \"
       scope: string.quoted.double.html punctuation.definition.string.begin.html
-      set: tag-event-attribute-value-double-quoted-content
+      set: tag-event-attribute-value-double-quoted-body
     - match: \'
       scope: string.quoted.single.html punctuation.definition.string.begin.html
-      set: tag-event-attribute-value-single-quoted-content
+      set: tag-event-attribute-value-single-quoted-body
     - include: else-pop
 
-  tag-event-attribute-value-double-quoted-content:
+  tag-event-attribute-value-double-quoted-body:
+    - meta_include_prototype: false
     - meta_scope: meta.string.html
     - meta_content_scope: meta.interpolation.html source.js.embedded.html
     - match: \"
       scope: string.quoted.double.html punctuation.definition.string.end.html
       pop: 1
+    - include: tag-event-attribute-value-double-quoted-content
+
+  tag-event-attribute-value-double-quoted-content:
     - include: scope:source.js.embedded.string.quoted.double.php
 
-  tag-event-attribute-value-single-quoted-content:
+  tag-event-attribute-value-single-quoted-body:
+    - meta_include_prototype: false
     - meta_scope: meta.string.html
     - meta_content_scope: meta.interpolation.html source.js.embedded.html
     - match: \'
       scope: string.quoted.single.html punctuation.definition.string.end.html
       pop: 1
+    - include: tag-event-attribute-value-single-quoted-content
+
+  tag-event-attribute-value-single-quoted-content:
     - include: scope:source.js.embedded.string.quoted.single.php
 
   tag-style-attribute-value:
+    - meta_include_prototype: false
     - match: \"
       scope: string.quoted.double.html punctuation.definition.string.begin.html
-      set: tag-style-attribute-value-double-quoted-content
+      set: tag-style-attribute-value-double-quoted-body
     - match: \'
       scope: string.quoted.single.html punctuation.definition.string.begin.html
-      set: tag-style-attribute-value-single-quoted-content
+      set: tag-style-attribute-value-single-quoted-body
     - include: else-pop
 
-  tag-style-attribute-value-double-quoted-content:
+  tag-style-attribute-value-double-quoted-body:
+    - meta_include_prototype: false
     - meta_scope: meta.string.html
     - meta_content_scope: meta.interpolation.html source.css.embedded.html
     - match: \"
       scope: string.quoted.double.html punctuation.definition.string.end.html
       pop: 1
+    - include: tag-style-attribute-value-double-quoted-content
+
+  tag-style-attribute-value-double-quoted-content:
     - include: scope:source.css.embedded.string.quoted.double.php
 
-  tag-style-attribute-value-single-quoted-content:
+  tag-style-attribute-value-single-quoted-body:
+    - meta_include_prototype: false
     - meta_scope: meta.string.html
     - meta_content_scope: meta.interpolation.html source.css.embedded.html
     - match: \'
       scope: string.quoted.single.html punctuation.definition.string.end.html
       pop: 1
+    - include: tag-style-attribute-value-single-quoted-content
+
+  tag-style-attribute-value-single-quoted-content:
     - include: scope:source.css.embedded.string.quoted.single.php
 
   tag-attribute-value-content: