Code completion: '=' char supported for all items + it inserts spaces around '='

idea/testData/completion/handlers/charFilter/Eq1.kt

@@ -0,0 +1,8 @@
+var vvv = 1
+
+fun foo() {
+    <caret>
+}
+
+// ELEMENT: vvv
+// CHAR: =

idea/testData/completion/handlers/charFilter/Eq1.kt.after

@@ -0,0 +1,8 @@
+var vvv = 1
+
+fun foo() {
+    vvv = <caret>
+}
+
+// ELEMENT: vvv
+// CHAR: =

idea/testData/completion/handlers/charFilter/Eq2.kt

@@ -0,0 +1,10 @@
+var vvv = 1
+var vvv1 = 2
+
+fun foo() {
+    vvv<caret>
+}
+
+// INVOCATION_COUNT: 0
+// ELEMENT: *
+// CHAR: =

idea/testData/completion/handlers/charFilter/Eq2.kt.after

@@ -0,0 +1,10 @@
+var vvv = 1
+var vvv1 = 2
+
+fun foo() {
+    vvv=<caret>
+}
+
+// INVOCATION_COUNT: 0
+// ELEMENT: *
+// CHAR: =