fix #1110

Author: DonJayamanne

src/client/jedi/parsers/CompletionParser.ts

@@ -1,4 +1,4 @@
-import { CompletionItem, SymbolKind } from 'vscode';
+import { CompletionItem, SymbolKind, SnippetString } from 'vscode';
 import * as proxy from '../../providers/jediProxy';
 import { extractSignatureAndDocumentation } from '../../providers/jediHelpers';
 import { PythonSettings } from '../../common/configSettings';
@@ -18,7 +18,7 @@ export class CompletionParser {
             completionItem.detail = sigAndDocs[0].split(/\r?\n/).join('');
             if (pythonSettings.autoComplete.addBrackets === true &&
                 (item.kind === SymbolKind.Function || item.kind === SymbolKind.Method)) {
-                completionItem.insertText = item.text + '({{}})';
+                completionItem.insertText = new SnippetString(item.text).appendText("(").appendTabstop().appendText(")");
             }
 
             // ensure the built in memebers are at the bottom

src/client/providers/completionProvider.ts

@@ -6,6 +6,7 @@ import * as telemetryContracts from '../common/telemetryContracts';
 import { extractSignatureAndDocumentation } from './jediHelpers';
 import { EOL } from 'os';
 import { PythonSettings } from '../common/configSettings';
+import { SnippetString } from 'vscode';
 
 const pythonSettings = PythonSettings.getInstance();
 
@@ -25,7 +26,7 @@ export class PythonCompletionItemProvider implements vscode.CompletionItemProvid
                 completionItem.detail = sigAndDocs[0].split(/\r?\n/).join('');
                 if (pythonSettings.autoComplete.addBrackets === true &&
                     (item.kind === vscode.SymbolKind.Function || item.kind === vscode.SymbolKind.Method)) {
-                    completionItem.insertText = item.text + '({{}})';
+                    completionItem.insertText = new SnippetString(item.text).appendText("(").appendTabstop().appendText(")");
                 }
 
                 // ensure the built in memebers are at the bottom