Dragging a tab away from main window, to create new the color formatting is gone

[nivs1978]

#

Description of the Issue

When I drag a tab away from the main window to create a new, the color formatting of the text disappears.
This only happen to file types added in the userDefineLang.xml file.

Steps to Reproduce the Issue

1. Add a userDefinedLang.xml file to the %appdata%\Notepad++\ folder. Example use the one provided for MapBasic (*,mb files) here: http://www.twiav.nl/php/mapbasic.php
2. Open a few file, where one is an .mb file.
3. Drag one of the tabs away from the main window to create a new MapBasic window. All color formatting is gone.

Expected Behavior

I expect to see the same color formatting as I do in the main window.

Actual Behavior

The text of the .mb file is displayed in black and white.

Debug Information

Notepad++ v7.4.1 (32-bit)
Build time : May 18 2017 - 02:00:37
Path : C:\Program Files (x86)\Notepad++\notepad++.exe
Admin mode : OFF
Local Conf mode : OFF
OS : Windows 10 (64-bit)
Plugins : mimeTools.dll NppConverter.dll NppExport.dll NppFTP.dll PluginManager.dll SpellChecker.dll XMLTools.dll

Save this as test.mb to check color formatting:
'**************************************************************************
' Include files and Define statements

Include "mapbasic.def" 'standard defines

Include "auto_lib.def" 'include this file to access the AUTO_LIB library
'The actual AUTO_LIB routines are in AUTO_LIB.MB[O]
Include "menu.def"
Include "icons.def"

Include "Library\Defaults.def"
Include "Library\ProgramInfo.def"
Include "Library\DEBUGLib.def"
Include "Library\ERRORLib.def"
Include "Library\MAPPERLib.def"
Include "Library\RIBBONLib.def"
Include "Library\TABLELib.def"

[BreakTheWind]

26 days and no resolution. I have the same problem. What gives? I just installed notepad++ and I have no added plugins.

Note that this happens only with user-defined languages.
Maybe a workaround would add the language to the default ones?

[ArkadiuszMichalski]

Still valid in latest Notepad++ 7.9. STR:

1. Download test.txt and change .txt extension to .md (NPP has in-build UDL for markdown).
2. Run Notepepad++ and open test.md.
3. Move/Open tab with test.md file in new instance, for example by drag this tab outside NPP main window or select proper commands from tab's context menu.

[bReathl3sS]

Same as @ArkadiuszMichalski - still not working in 7.9.1 64-bit Win10
Possible duplicate of #4769 #5589

[pryrt]

user in forum reported it: https://community.notepad-plus-plus.org/topic/20812/language-style-changes-when-tab-view-is-dragged-out-of-notepad

I confirmed with fresh v7.9.3 portable that the problem still exists:

1. create new file with some markdown in it
2. Language > Markdown (preinstalled),
3. save as blah.md
4. verify the status bar says "user defined language file - markdown (preinstalled)"
   
5. right click on the tab, Move to New Instance
6. now it shows
   

Debug Info:

Notepad++ v7.9.3   (64-bit)
Build time : Feb  8 2021 - 18:16:35
Path : C:\usr\local\apps\npp\npp.7.9.3.portable.x64\notepad++.exe
Admin mode : OFF
Local Conf mode : ON
OS Name : Windows 10 Enterprise (64-bit) 
OS Version : 1903
OS Build : 18362.1256
Current ANSI codepage : 1252
Plugins : mimeTools.dll NppConverter.dll NppExport.dll 

[pryrt]

Looking at #4883, I was surprised when the user there claimed the problem didn't exist in 7.9RC -- when I do a fresh unzip of the released v7.9 (I don't have a copy of the RC any more, and after release the RC URL at http://download.notepad-plus-plus.org/repository/7.x/7.9.RC/ doesn't work). But when I try with the released v7.9 portable, I get the same bad results -> doing Move to New Instance changed the markdown file from User Defined Language file - Markdown (preinstalled) as it should be to User Defined Language file (ie, the default Language > User-defined)

Notepad++ v7.9   (64-bit)
Build time : Sep 22 2020 - 03:19:04
Path : C:\usr\local\apps\npp\npp.7.9.portable.x64\notepad++.exe
Admin mode : OFF
Local Conf mode : ON
OS Name : Windows 10 Enterprise (64-bit) 
OS Version : 1903
OS Build : 18362.1256
Current ANSI codepage : 1252
Plugins : mimeTools.dll NppConverter.dll NppExport.dll