Cannot read property 'replace' of undefined in certain filetypes

[tylerFowler]

Edit by @rsese to add repro steps

1. Start Atom in safe mode atom --safe
2. Add _ to Settings > Editor > Non Word Characters
3. Create a new file
4. Start typing in the new file

macOS 10.12.6 and Atom 1.25.

---

I find that in certain file types I get this exception thrown (Atom Beta). So far I've found it reliably does it in git commit message types (invoked by git-plus) and in Go files, but have not seen it with the same version in JS or Java files. It tends to keep throwing this error over and over as I type.

Worth noting this error was definitely not present until the latest Beta update, which included autocomplete-plus version 2.40.2

Atom: 1.25.0-beta0 x64
Electron: 1.7.11
OS: Mac OS X 10.13.3
Thrown From: Atom Core

Stack Trace

Uncaught TypeError: Cannot read property 'replace' of undefined

At /Applications/Atom Beta.app/Contents/Resources/app/node_modules/autocomplete-plus/lib/autocomplete-manager.js:527

TypeError: Cannot read property 'replace' of undefined
    at AutocompleteManager.getWordCharacterRegex (/Applications/Atom Beta.app/Contents/Resources/app/node_modules/autocomplete-plus/lib/autocomplete-manager.js:527:72)
    at AutocompleteManager.getPrefix (/Applications/Atom Beta.app/Contents/Resources/app/node_modules/autocomplete-plus/lib/autocomplete-manager.js:507:43)
    at AutocompleteManager.findSuggestions (/Applications/Atom Beta.app/Contents/Resources/app/node_modules/autocomplete-plus/lib/autocomplete-manager.js:260:31)

Commands

  2x -0:09.1.0 core:move-down (input.hidden-input)
     -0:07.3.0 editor:delete-to-beginning-of-word (input.hidden-input)
     -0:06.6.0 core:backspace (input.hidden-input)
     -0:05.8.0 editor:delete-to-beginning-of-word (input.hidden-input)
     -0:04.3.0 core:move-up (input.hidden-input)

Non-Core Packages

Was able to reproduce in safe mode

[tuomashatakka]

I've noticed that this error is not raised when the language-babel package is disabled. I can't tell if it's caused by the language-babel, but I think it would be helpful to post this issue to its issues as well :--)

Third time's the charm.

[tylerFowler]

This is kind of weird but after the latest update to Atom my config was somehow completely blown away and now I'm no longer getting this error? Will close for now and reopen if I'm able to reproduce again.. And if it does crop up again I'll try disabling language-babel thanks for the tip @tuomashatakka

[iagoqo]

I'm also on atom beta and have the same issue on plain text files, the version I'm using is 1.25.0-beta3.

It's not a babel issue for me as it also happens on safe mode.

[Enter steps to reproduce:]

1. Open atom in safe mode
2. It opens with an empty plain text editor
3. Type anything
4. Error apppears

Atom: 1.25.0-beta3 x64
Electron: 1.7.11
OS: Microsoft Windows 10 Home
Thrown From: Atom Core

Stack Trace

Uncaught TypeError: Cannot read property 'replace' of undefined

At C:\ProgramData\iagoqo\atom\app-1.25.0-beta3\resources\app\node_modules\autocomplete-plus\lib\autocomplete-manager.js:527

TypeError: Cannot read property 'replace' of undefined
    at AutocompleteManager.getWordCharacterRegex (C:/ProgramData/iaaggooqqoo/atom/app-1.25.0-beta3/resources/app/node_modules/autocomplete-plus/lib/autocomplete-manager.js:527:72)
    at AutocompleteManager.getPrefix (C:/ProgramData/iagoqo/atom/app-1.25.0-beta3/resources/app/node_modules/autocomplete-plus/lib/autocomplete-manager.js:507:43)
    at AutocompleteManager.findSuggestions (C:/ProgramData/iagoqo/atom/app-1.25.0-beta3/resources/app/node_modules/autocomplete-plus/lib/autocomplete-manager.js:260:31)
    at AutocompleteManager.requestNewSuggestions (C:/ProgramData/iagoqo/atom/app-1.25.0-beta3/resources/app/node_modules/autocomplete-plus/lib/autocomplete-manager.js:704:18)
    at AutocompleteManager.showOrHideSuggestionListForBufferChanges (C:/ProgramData/iagoqo/atom/app-1.25.0-beta3/resources/app/node_modules/autocomplete-plus/lib/autocomplete-manager.js:770:18)
    at Function.module.exports.Emitter.simpleDispatch (C:/ProgramData/iagoqo/atom/app-1.25.0-beta3/resources/app/node_modules/event-kit/lib/emitter.js:25:20)
    at Emitter.module.exports.Emitter.emit (C:/ProgramData/iagoqo/atom/app-1.25.0-beta3/resources/app/node_modules/event-kit/lib/emitter.js:141:34)
    at TextBuffer.module.exports.TextBuffer.emitDidChangeTextEvent (C:/ProgramData/iagoqo/atom/app-1.25.0-beta3/resources/app/node_modules/text-buffer/lib/text-buffer.js:1748:32)
    at TextBuffer.module.exports.TextBuffer.transact (C:/ProgramData/iagoqo/atom/app-1.25.0-beta3/resources/app/node_modules/text-buffer/lib/text-buffer.js:975:18)
    at TextEditor.transact (C:/ProgramData/iagoqo/atom/app-1.25.0-beta3/resources/app/src/text-editor.js:1839:30)
    at mergeIntersectingSelections (C:/ProgramData/iagoqo/atom/app-1.25.0-beta3/resources/app/src/text-editor.js:1386:25)
    at TextEditor.mergeSelections (C:/ProgramData/iagoqo/atom/app-1.25.0-beta3/resources/app/src/text-editor.js:3252:26)
    at TextEditor.mergeIntersectingSelections (C:/ProgramData/iagoqo/atom/app-1.25.0-beta3/resources/app/src/text-editor.js:3223:42)
    at TextEditor.mutateSelectedText (C:/ProgramData/iagoqo/atom/app-1.25.0-beta3/resources/app/src/text-editor.js:1385:23)
    at TextEditor.insertText (C:/ProgramData/iagoqo/atom/app-1.25.0-beta3/resources/app/src/text-editor.js:1349:31)
    at TextEditor.object.(anonymous function) [as insertText] (C:/ProgramData/iagoqo/atom/app-1.25.0-beta3/resources/app/node_modules/underscore-plus/lib/underscore-plus.js:77:33)
    at TextEditorComponent.didTextInput (C:/ProgramData/iagoqo/atom/app-1.25.0-beta3/resources/app/src/text-editor-component.js:1654:30)

Commands

  2x -1:45.3.0 editor:delete-to-previous-word-boundary (input.hidden-input)

Non-Core Packages

Edit: So far I've found the issue on plain text and JSON files.

[rsese]

@iagoqo have you tried clearing saved state (make sure to save any unsaved data first)?

https://flight-manual.atom.io/hacking-atom/sections/debugging/#clearing-saved-state

[edrubin]

I have the same issue only for R files. Unfortunately, clearing the saved state didn't help.

[BojanOro]

I too have the same issue for at least Ruby and plain text files. HTML works fine.

[rsese]

@edrubin @BojanOro is this in safe mode as well?

[BojanOro]

@rsese indeed, safe mode doesn't help. Also attempted to clear the saved state to no avail.

Atom : 1.25.0
Electron: 1.7.11
OS: MacOS 10.13.1

Stack Trace:

TypeError: Cannot read property 'replace' of undefined
    at AutocompleteManager.getWordCharacterRegex (/Applications/Atom.app/Contents/Resources/app/node_modules/autocomplete-plus/lib/autocomplete-manager.js:527:72)
    at AutocompleteManager.getPrefix (/Applications/Atom.app/Contents/Resources/app/node_modules/autocomplete-plus/lib/autocomplete-manager.js:507:43)
    at AutocompleteManager.findSuggestions (/Applications/Atom.app/Contents/Resources/app/node_modules/autocomplete-plus/lib/autocomplete-manager.js:260:31)
    at AutocompleteManager.requestNewSuggestions (/Applications/Atom.app/Contents/Resources/app/node_modules/autocomplete-plus/lib/autocomplete-manager.js:704:18)
    at AutocompleteManager.showOrHideSuggestionListForBufferChanges (/Applications/Atom.app/Contents/Resources/app/node_modules/autocomplete-plus/lib/autocomplete-manager.js:770:18)
    at Function.module.exports.Emitter.simpleDispatch (/Applications/Atom.app/Contents/Resources/app/node_modules/event-kit/lib/emitter.js:25:20)
    at Emitter.module.exports.Emitter.emit (/Applications/Atom.app/Contents/Resources/app/node_modules/event-kit/lib/emitter.js:141:34)
    at TextBuffer.module.exports.TextBuffer.emitDidChangeTextEvent (/Applications/Atom.app/Contents/Resources/app/node_modules/text-buffer/lib/text-buffer.js:1748:32)
    at TextBuffer.module.exports.TextBuffer.transact (/Applications/Atom.app/Contents/Resources/app/node_modules/text-buffer/lib/text-buffer.js:975:18)
    at TextEditor.transact (/Applications/Atom.app/Contents/Resources/app/src/text-editor.js:1839:30)
    at mergeIntersectingSelections (/Applications/Atom.app/Contents/Resources/app/src/text-editor.js:1386:25)
    at TextEditor.mergeSelections (/Applications/Atom.app/Contents/Resources/app/src/text-editor.js:3252:26)
    at TextEditor.mergeIntersectingSelections (/Applications/Atom.app/Contents/Resources/app/src/text-editor.js:3223:42)
    at TextEditor.mutateSelectedText (/Applications/Atom.app/Contents/Resources/app/src/text-editor.js:1385:23)
    at TextEditor.insertText (/Applications/Atom.app/Contents/Resources/app/src/text-editor.js:1349:31)
    at TextEditor.object.(anonymous function) [as insertText] (/Applications/Atom.app/Contents/Resources/app/node_modules/underscore-plus/lib/underscore-plus.js:77:33)
    at TextEditorComponent.didTextInput (/Applications/Atom.app/Contents/Resources/app/src/text-editor-component.js:1654:30)

[rsese]

Do you have steps to reproduce so we can give it a try @BojanOro?

[BojanOro]

1. Open a new file
2. Start typing. Literally a single character will throw an exception.

[Aerijo]

@BojanOro I cannot reproduce by following those steps.

Is there anything more specific you can give, such as what config settings you have for autocomplete-plus? Additionally, check for scope specific settings under each language.

[drorata]

I have the same issue:

/Applications/Atom.app/Contents/Resources/app/node_modules/autocomplete-plus/lib/autocomplete-manager.js:527
Hide Stack Trace
TypeError: Cannot read property 'replace' of undefined
    at AutocompleteManager.getWordCharacterRegex (/Applications/Atom.app/Contents/Resources/app/node_modules/autocomplete-plus/lib/autocomplete-manager.js:527:72)
    at AutocompleteManager.getPrefix (/Applications/Atom.app/Contents/Resources/app/node_modules/autocomplete-plus/lib/autocomplete-manager.js:507:43)
    at AutocompleteManager.findSuggestions (/Applications/Atom.app/Contents/Resources/app/node_modules/autocomplete-plus/lib/autocomplete-manager.js:260:31)
    at AutocompleteManager.requestNewSuggestions (/Applications/Atom.app/Contents/Resources/app/node_modules/autocomplete-plus/lib/autocomplete-manager.js:704:18)
    at AutocompleteManager.showOrHideSuggestionListForBufferChanges (/Applications/Atom.app/Contents/Resources/app/node_modules/autocomplete-plus/lib/autocomplete-manager.js:770:18)
    at Function.module.exports.Emitter.simpleDispatch (/Applications/Atom.app/Contents/Resources/app/node_modules/event-kit/lib/emitter.js:25:20)
    at Emitter.module.exports.Emitter.emit (/Applications/Atom.app/Contents/Resources/app/node_modules/event-kit/lib/emitter.js:141:34)
    at TextBuffer.module.exports.TextBuffer.emitDidChangeTextEvent (/Applications/Atom.app/Contents/Resources/app/node_modules/text-buffer/lib/text-buffer.js:1748:32)
    at TextBuffer.module.exports.TextBuffer.transact (/Applications/Atom.app/Contents/Resources/app/node_modules/text-buffer/lib/text-buffer.js:975:18)
    at TextEditor.transact (/Applications/Atom.app/Contents/Resources/app/src/text-editor.js:1839:30)
    at mergeIntersectingSelections (/Applications/Atom.app/Contents/Resources/app/src/text-editor.js:1386:25)
    at TextEditor.mergeSelections (/Applications/Atom.app/Contents/Resources/app/src/text-editor.js:3252:26)
    at TextEditor.mergeIntersectingSelections (/Applications/Atom.app/Contents/Resources/app/src/text-editor.js:3223:42)
    at TextEditor.mutateSelectedText (/Applications/Atom.app/Contents/Resources/app/src/text-editor.js:1385:23)
    at TextEditor.insertText (/Applications/Atom.app/Contents/Resources/app/src/text-editor.js:1349:31)
    at TextEditor.object.(anonymous function) [as insertText] (/Applications/Atom.app/Contents/Resources/app/node_modules/underscore-plus/lib/underscore-plus.js:77:33)
    at TextEditorComponent.didTextInput (/Applications/Atom.app/Contents/Resources/app/src/text-editor-component.js:1654:30)

I have Python Executable Paths and Extra Paths For Packages set.

@tylerFowler What do you mean by:

This is kind of weird but after the latest update to Atom my config was somehow completely blown away and now I'm no longer getting this error?

Can you please reopen this issue? It seems it is still very present for some users.

[Arcanemagus]

@drorata Are you able to provide steps to reproduce this? So far the suggested steps of:

1. Open an editor
2. Type something

Haven't been able to be reproduced by anyone, so there must be something missing from them.

Can somebody who is experiencing this try Resetting to Factory Defaults temporarily to see if they still see this on a clean profile?