Completion auto-popup works at the start of function literal

idea/testData/completion/basic/common/FunctionLiteralParameterName0.kt

@@ -3,4 +3,5 @@ fun bar() {
 }
 
 // INVOCATION_COUNT: 0
-// NUMBER: 0
+// EXIST: bar
+// EXIST: null

idea/testData/completion/basic/common/FunctionLiteralParameterName1.kt

@@ -3,4 +3,5 @@ fun bar() {
 }
 
 // INVOCATION_COUNT: 0
-// NUMBER: 0
+// EXIST: bar
+// EXIST: null

idea/testData/completion/basic/common/FunctionLiteralParameterName5.kt

@@ -5,4 +5,5 @@ fun bar() {
 }
 
 // INVOCATION_COUNT: 0
-// NUMBER: 0
+// EXIST: bar
+// EXIST: null

idea/testData/completion/handlers/charFilter/FunctionLiteralParameter1.kt

@@ -0,0 +1,9 @@
+fun foo(p: (String) -> Unit){}
+
+fun bar() {
+    foo { p<caret> }
+}
+
+// INVOCATION_COUNT: 0
+// ELEMENT: *
+// CHAR: ' '

idea/testData/completion/handlers/charFilter/FunctionLiteralParameter1.kt.after

@@ -0,0 +1,9 @@
+fun foo(p: (String) -> Unit){}
+
+fun bar() {
+    foo { p <caret> }
+}
+
+// INVOCATION_COUNT: 0
+// ELEMENT: *
+// CHAR: ' '

idea/testData/completion/handlers/charFilter/FunctionLiteralParameter2.kt

@@ -0,0 +1,9 @@
+fun foo(p: (String) -> Unit){}
+
+fun bar() {
+    foo { (p<caret> }
+}
+
+// INVOCATION_COUNT: 0
+// ELEMENT: *
+// CHAR: ':'

idea/testData/completion/handlers/charFilter/FunctionLiteralParameter2.kt.after

@@ -0,0 +1,9 @@
+fun foo(p: (String) -> Unit){}
+
+fun bar() {
+    foo { (p:<caret> }
+}
+
+// INVOCATION_COUNT: 0
+// ELEMENT: *
+// CHAR: ':'

idea/testData/completion/handlers/charFilter/FunctionLiteralParameter3.kt

@@ -0,0 +1,9 @@
+fun bar() {
+    val handler = { p<caret>
+        foo()
+    }
+}
+
+// INVOCATION_COUNT: 0
+// ELEMENT: *
+// CHAR: ' '

idea/testData/completion/handlers/charFilter/FunctionLiteralParameter3.kt.after

@@ -0,0 +1,9 @@
+fun bar() {
+    val handler = { p <caret>
+        foo()
+    }
+}
+
+// INVOCATION_COUNT: 0
+// ELEMENT: *
+// CHAR: ' '