fix(graphite): fixed minor graphite lexer issue when nodes begin with octal…

fix(graphite): fixed minor graphite lexer issue when nodes begin with octal syntax and end with dash identifier, fixes #6049#

public/app/features/dashboard/submenu/submenu.html

@@ -2,7 +2,7 @@
   <div ng-repeat="variable in ctrl.variables" ng-hide="variable.hide === 2" class="submenu-item gf-form-inline">
     <div class="gf-form">
       <label class="gf-form-label template-variable" ng-hide="variable.hide === 1">
-        {{variable.label || variable.name}}:
+        {{variable.label || variable.name}}
       </label>
       <value-select-dropdown ng-if="variable.type !== 'adhoc'" variable="variable" on-updated="ctrl.variableUpdated(variable)" get-values-for-tag="ctrl.getValuesForTag(variable, tagKey)"></value-select-dropdown>
     </div>

public/app/plugins/datasource/graphite/parser.ts

@@ -100,10 +100,7 @@ Parser.prototype = {
   },
 
   metricExpression: function() {
-    if (!this.match('templateStart') &&
-        !this.match('identifier') &&
-          !this.match('number') &&
-            !this.match('{')) {
+    if (!this.match('templateStart') && !this.match('identifier') && !this.match('number') && !this.match('{')) {
       return null;
     }
 

public/app/plugins/datasource/graphite/specs/lexer_specs.ts

@@ -62,6 +62,14 @@ describe('when lexing graphite expression', function() {
     expect(tokens[4].type).to.be('identifier');
   });
 
+  it('should tokenize metric expression with segment that start with number', function() {
+    var lexer = new Lexer("metric.001-server");
+    var tokens = lexer.tokenize();
+    expect(tokens[0].type).to.be('identifier');
+    expect(tokens[2].type).to.be('identifier');
+    expect(tokens.length).to.be(3);
+  });
+
   it('should tokenize func call with numbered metric and number arg', function() {
     var lexer = new Lexer("scale(metric.10, 15)");
     var tokens = lexer.tokenize();