[NETBEANS-3335] NB 11.2 NullPointerException - Enter key doesn't work in editor in certain files

• Type: Bug
• Status: Closed
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 11.2
• Fix Version/s: 11.3
• Component/s: web - HTML Editor
• Labels: pull-request-available

Environment

Windows 10 64-bit, JDK 11.0.1 and 13.0.1

• Assignee: Matthias Bläsing
• Reporter: Michal Koscielny
• Created: 04/Nov/19 01:13
• Updated: 03/Nov/20 15:44
• Resolved: 08/Nov/19 21:11

Description

I've just tried NetBeans 11.2 for PHP projects and this version appears to be unusable for PHP due to lots of NPE errors, which in effect prevent the Enter key from working in the editor. It looks like certain code structures trigger the NPE's. So far I've come across them in js and tpl (Smarty) files. And I have a way of reproducing the problem:

1. Create a new PHP project or open an existing one.
2. Create a new Smarty .tpl file (or open an existing one).
3. In the editor paste this code:

<a {if $smarty.server.REQUEST_URI|strstr:"/new"}class="underline"{/if} href="{url('new')}">

1. Try pressing Enter anywhere in the editor - an NPE comes up and the Enter key does not work.

There seem to be more code samples that trigger the error but for now I'm reporting the first one that caught my attention. Here is the error:

java.lang.NullPointerExceptionjava.lang.NullPointerException at org.netbeans.lib.html.lexer.HtmlLexer.equals(HtmlLexer.java:1557) at org.netbeans.lib.html.lexer.HtmlLexer.nextToken(HtmlLexer.java:1051) at org.netbeans.lib.lexer.LexerInputOperation.nextToken(LexerInputOperation.java:191) at org.netbeans.lib.lexer.BatchTokenList.tokenOrEmbeddingImpl(BatchTokenList.java:171) at org.netbeans.lib.lexer.BatchTokenList.tokenCount(BatchTokenList.java:122) at org.netbeans.api.lexer.TokenSequence.moveEnd(TokenSequence.java:607) at org.netbeans.modules.html.editor.lib.ElementsParser.forTokenIndex(ElementsParser.java:106) at org.netbeans.modules.html.editor.lib.api.elements.ElementsIterator.<init>(ElementsIterator.java:63) at org.netbeans.modules.html.editor.lib.api.SyntaxAnalyzer.<init>(SyntaxAnalyzer.java:57) at org.netbeans.modules.html.editor.lib.api.SyntaxAnalyzer.create(SyntaxAnalyzer.java:53) at org.netbeans.modules.html.editor.indent.HtmlIndenter.<init>(HtmlIndenter.java:63) at org.netbeans.modules.html.editor.indent.HtmlIndentTask.<init>(HtmlIndentTask.java:40) at org.netbeans.modules.html.editor.indent.HtmlIndentTaskFactory.createTask(HtmlIndentTaskFactory.java:32) at org.netbeans.modules.editor.indent.TaskHandler$MimeItem.createTask(TaskHandler.java:531) at org.netbeans.modules.editor.indent.TaskHandler.addItem(TaskHandler.java:315) at org.netbeans.modules.editor.indent.TaskHandler.collectTasks(TaskHandler.java:133) at org.netbeans.modules.editor.indent.IndentImpl.indentLock(IndentImpl.java:136) at org.netbeans.modules.editor.indent.api.Indent.lock(Indent.java:91) at org.netbeans.editor.BaseKit$InsertBreakAction.actionPerformed(BaseKit.java:1518) at org.netbeans.editor.BaseAction.actionPerformed(BaseAction.java:322) at java.desktop/javax.swing.SwingUtilities.notifyAction(SwingUtilities.java:1810) at java.desktop/javax.swing.JComponent.processKeyBinding(JComponent.java:2900) at java.desktop/javax.swing.JComponent.processKeyBindings(JComponent.java:2948) at java.desktop/javax.swing.JComponent.processKeyEvent(JComponent.java:2862) at java.desktop/java.awt.Component.processEvent(Component.java:6413) at java.desktop/java.awt.Container.processEvent(Container.java:2263) at java.desktop/java.awt.Component.dispatchEventImpl(Component.java:5012) at java.desktop/java.awt.Container.dispatchEventImpl(Container.java:2321) at java.desktop/java.awt.Component.dispatchEvent(Component.java:4844) at java.desktop/java.awt.KeyboardFocusManager.redispatchEvent(KeyboardFocusManager.java:1950) at java.desktop/java.awt.DefaultKeyboardFocusManager.dispatchKeyEvent(DefaultKeyboardFocusManager.java:870) at java.desktop/java.awt.DefaultKeyboardFocusManager.preDispatchKeyEvent(DefaultKeyboardFocusManager.java:1139) at java.desktop/java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(DefaultKeyboardFocusManager.java:1009) at java.desktop/java.awt.DefaultKeyboardFocusManager.dispatchEvent(DefaultKeyboardFocusManager.java:835) at java.desktop/java.awt.Component.dispatchEventImpl(Component.java:4893) at java.desktop/java.awt.Container.dispatchEventImpl(Container.java:2321) at java.desktop/java.awt.Window.dispatchEventImpl(Window.java:2762) at java.desktop/java.awt.Component.dispatchEvent(Component.java:4844) at java.desktop/java.awt.EventQueue.dispatchEventImpl(EventQueue.java:772) at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:721) at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:715) at java.base/java.security.AccessController.doPrivileged(AccessController.java:391) at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:85) at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:95) at java.desktop/java.awt.EventQueue$5.run(EventQueue.java:745) at java.desktop/java.awt.EventQueue$5.run(EventQueue.java:743) at java.base/java.security.AccessController.doPrivileged(AccessController.java:391) at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:85) at java.desktop/java.awt.EventQueue.dispatchEvent(EventQueue.java:742) at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:136)[catch] at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:203) at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:124) at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:113) at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:109) at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101) at java.desktop/java.awt.EventDispatchThread.run(EventDispatchThread.java:90)

I'm using Windows 10 64-bit and the zipped Netbeans 11.2. I tried running on jdk 11.0.1 and 13.0.1 - didn't make any difference. The error occurs even on fresh NetBeans installation (without importing previous settings) without any plugins apart from the default PHP plugins available under the "PHP" checkbox under Plugins/Installed tab.

I don't know exactly when the bug first appeared since I skipped 11.1. I'm now back to 11.0.

Issue Links

• duplicates: NETBEANS-3394 unable to insert new line into js file
• is duplicated by: NETBEANS-3516 Exception when opening an html file containing mustache syntax, unable to open file
• is duplicated by: NETBEANS-3555 Exception occurs after pressing ENTER in *.js file
• is duplicated by: NETBEANS-3493 Crash on Enter key in JSP editor
• is duplicated by: NETBEANS-3347 Editor
• is duplicated by: NETBEANS-3386 Error while pressing enter (adding newline) in js file
• is duplicated by: NETBEANS-3425 Cannot Enter Carriage Return in Javascript
• is duplicated by: NETBEANS-3426 In edit Javascript, Input key "Enter" not go to new string.
• is duplicated by: NETBEANS-3435 Pressing enter button in specific js file is not working
• is duplicated by: NETBEANS-3436 Cant open some smarty tpl files
• is duplicated by: NETBEANS-3446 Can't enter new line in js file
• links to: GitHub Pull Request #1617