Mousemap: Add support for context key

Was added in build 4149.

Closes #388

Author: FichteFoll

Package/Sublime Text Mousemap/Completions/Main Keys (in-string).sublime-completions

@@ -16,6 +16,11 @@
 			"details": "Command name",
 			"kind": ["keyword", "k", "main"],
 		},
+		{
+			"trigger": "context",
+			"details": "Context restrictions",
+			"kind": ["keyword", "k", "main"],
+		},
 		{
 			"trigger": "args",
 			"details": "Command arguments",

Package/Sublime Text Mousemap/Completions/Main Keys.sublime-completions

@@ -19,6 +19,12 @@
             "details": "Command name",
             "kind": ["keyword", "k", "main"],
         },
+        {
+            "trigger": "context",
+            "contents": "\"context\": [\n\t$0\n],",
+            "details": "Context restrictions",
+            "kind": ["keyword", "k", "main"],
+        },
         {
             "trigger": "press_command",
             "contents": "\"press_command\": \"$1\",$0",

Package/Sublime Text Mousemap/Sublime Text Mousemap.sublime-syntax

@@ -60,6 +60,13 @@ contexts:
         2: keyword.other.main.sublime-mousemap
         3: punctuation.definition.string.end.json
       set: [expect-command-name-value, expect-colon]
+    - match: (")(context)(")
+      scope: meta.mapping.key.json meta.main-key.sublime-mousemap string.quoted.double.json
+      captures:
+        1: punctuation.definition.string.begin.json
+        2: keyword.other.main.sublime-keymap
+        3: punctuation.definition.string.end.json
+      set: [in-mapping-expect-comma, expect-context-sequence-value, expect-colon]
     - match: (")((?:press_)?args)(")
       scope: meta.mapping.key.json meta.main-key.sublime-mousemap string.quoted.double.json
       captures:
@@ -197,6 +204,10 @@ contexts:
   in-mapping-expect-comma:
     - include: Sublime JSON.sublime-syntax#in-mapping-expect-comma
 
+  expect-context-sequence-value:
+    # This means we have keymap suffixes in the scopes, but I'm lazy enough not to care
+    - include: Sublime Text Keymap.sublime-syntax#expect-context-sequence-value
+
   mapping-value-meta:
     - clear_scopes: 1  # remove `meta.mapping.json`
     - meta_scope: meta.mapping.value.json

Package/Sublime Text Mousemap/syntax_test_mousemap.json

@@ -101,6 +101,29 @@
 //          ^^ - invalid
 //            ^ punctuation.separator.sequence.json
 
+    {
+        "context": [
+//      ^^^^^^^^^ meta.mapping.key.json meta.main-key.sublime-mousemap string.quoted.double.json
+//      ^ punctuation.definition.string.begin.json
+//       ^^^^^^^ keyword.other.main.sublime-keymap
+//              ^ punctuation.definition.string.end.json
+//               ^ punctuation.separator.mapping.key-value.json
+//                 ^ meta.keybinding-context-collection.sublime-keymap punctuation.section.sequence.begin.json
+            { "key": "group_has_multiselect", "operator": "equal", "operand": "" },
+//          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ meta.keybinding-context-collection.sublime-keymap meta.keybinding-context.sublime-keymap meta.mapping
+//          ^ meta.mapping.json punctuation.section.mapping.begin.json
+//            ^^^^^ meta.mapping.key.json meta.context-key.sublime-keymap string.quoted.double.json
+//            ^ punctuation.definition.string.begin.json
+//             ^^^ support.function.context.sublime-keymap
+//                ^ punctuation.definition.string.end.json
+//                 ^ meta.mapping.json punctuation.separator.mapping.key-value.json
+//                   ^^^^^^^^^^^^^^^^^^^^^^^ meta.mapping.value.json meta.context.key-value.key.other.sublime-keymap string.quoted.double.json
+//                   ^ punctuation.definition.string.begin.json
+//                    ^^^^^^^^^^^^^^^^^^^^^ storage.type.context.key-value.sublime-keymap
+//                                         ^ punctuation.definition.string.end.json
+// (we assume the rest will be matched correctly and is separately tested in the keymap syntax)
+        ],
+    }
 
     {