mentions in publisher autocomplete within context

public/javascripts/jquery.autocomplete-custom.js

@@ -234,7 +234,7 @@ $.Autocompleter = function(input, options) {
 
 		previousValue = currentValue;
 
-		currentValue = options.searchTermFromValue(currentValue);
+		currentValue = options.searchTermFromValue(currentValue, $input[0].selectionStart);
 		if ( currentValue.length >= options.minChars) {
 			$input.addClass(options.loadingClass);
 			if (!options.matchCase)

public/javascripts/publisher.js

@@ -54,11 +54,21 @@ var Publisher = {
       textarea.val(formatted);
     },
 
-    searchTermFromValue: function(value)
+    searchTermFromValue: function(value, cursorIndex)
     {
-      matches = value.match(/@(.+)/);
+      var atLocation = value.lastIndexOf('@', cursorIndex);
+      if(atLocation == -1){return '';}
+      var nextAt = value.indexOf('@', cursorIndex+1);
+
+      if(nextAt == -1){nextAt = value.length;}
+      if(atLocation < 2){
+        atLocation = 0;
+      }else{ atLocation = atLocation -2 }
+
+      relevantString = value.slice(atLocation, nextAt).replace(/\s+$/,"");
+      matches = relevantString.match(/(^|\s)@(.+)/);
       if(matches){
-        return matches[1];
+        return matches[2];
       }else{
         return '';
       }

spec/javascripts/publisher-spec.js

@@ -78,24 +78,46 @@ describe("Publisher", function() {
           Publisher.form().find('#status_message_fake_message').val());
       });
     });
+    describe("input", function(){
+      beforeEach(function(){
+        spec.loadFixture('aspects_index_prefill');
+      });
+      it("returns the status_message_fake_message textarea", function(){
+        expect(Publisher.input()[0].id).toBe('status_message_fake_message');
+        expect(Publisher.input().length).toBe(1);
+      });
+    });
     describe("autocompletion", function(){
       describe("searchTermFromValue", function(){
         var func;
         beforeEach(function(){func = Publisher.autocompletion.searchTermFromValue;});
-        it("returns everything after an @", function(){
-          expect(func('not @dan grip')).toBe('dan grip');
+        it("returns nothing if the cursor is before the @", function(){
+          expect(func('not @dan grip', 2)).toBe('');
+        });
+        it("returns everything after an @ if the cursor is a word after that @", function(){
+          expect(func('not @dan grip', 13)).toBe('dan grip');
+        });
+        it("returns everything after an @ if the cursor is after that @", function(){
+          expect(func('not @dan grip', 7)).toBe('dan grip');
+        });
+
+        it("returns everything after an @ at the start of the line", function(){
+          expect(func('@dan grip', 9)).toBe('dan grip');
         });
         it("returns nothing if there is no @", function(){
-          expect(func('dan')).toBe('');
+          expect(func('dan', 3)).toBe('');
         });
         it("returns nothing for just an @", function(){
-          expect(func('@')).toBe('');
-        });
-        it("returns everything after the last @", function(){
-          expect(func('@siojfoi @dan"')).toBe('dan"');
+          expect(func('@', 1)).toBe('');
         });
         it("returns nothing if there are letters preceding the @", function(){
-          expect(func('ioj@asdo')).toBe('');
+          expect(func('ioj@asdo', 8)).toBe('');
+        });
+        it("returns everything between @s if there are 2 @s and the cursor is between them", function(){
+          expect(func('@asdpo  aoisdj @asodk', 8)).toBe('asdpo  aoisdj');
+        });
+        it("returns everything after the 2nd @ if there are 2 @s and the cursor after them", function(){
+          expect(func('@asod asdo @asd asok', 15)).toBe('asd asok');
         });
       });
     });

spec/javascripts/support/jasmine.yml

@@ -19,6 +19,7 @@ src_files:
   - public/javascripts/vendor/Mustache.js
   - public/javascripts/vendor/timeago.js
   - public/javascripts/vendor/facebox.js
+  - public/javascripts/jquery.autocomplete-custom.js
   - public/javascripts/diaspora.js
   - public/javascripts/widgets/alert.js
   - public/javascripts/widgets/embedder.js