If I had knew that this update will put this mess, I would have kept my previous 7.8.1 version that was just perfect…

By the way: Happy New Year !

Can you tell me how to proceed to perform this reset ?

Sorry, you misunderstood. I should have phrased it as “corruption” not “reset”. I said reset, because at least in some of the cases, some or all of the foreground colors get “reset” to black (which is the default foreground color when defining a UDL); in your case, the black foreground overtop your black background makes the text invisible. The “reset” already happened, when it corrupted the file.

At this point, if you do not have a backup copy of your UDL definition file (whether it was in the userDefineLang.xml or a file in the userDefineLangs\ subfolder), then you just have to manually define the colors, the same as you did when you created the UDL. This is why I said “you can use Language > User Defined Language > Define Your Language… to change the colors for a given language.” (If you didn’t create the UDL, but got it from someone/somewhere else, go grab a new copy; that is your “backup”.)

You say “There are instances (such as issue#5630) where UDL colorization gets reset under certain circumstances; so far, no fix has been found”.

Can you tell me how to proceed to perform this reset ? because I am not an expert of N++ at all…

Thank you,

There are instances (such as issue#5630) where UDL colorization gets reset under certain circumstances; so far, no fix has been found. Sorry if this is what caused your color corruption.

I personally recommend keeping each individual UDL in a separate XML in the userDefineLangs subfolder, and keep a backup of those (or keep it in version control, like I do), so if something gets corrupted, you can revert easily.

Since there is no “Arduino Activ” language built in, I am assuming it’s a UDL. With v7.8.2, you can use Language > User Defined Language > Define Your Language… to change the colors for a given language.

The file that sets it should either be in Language > User Defined Language > Open User Defined Language Folder…, or it should be in the parent directory to that one, as userDefineLang.xml.

UDL References:

• https://npp-user-manual.org/docs/user-defined-language-system/
• https://ivan-radic.github.io/udl-documentation/

Aside

The syntax for embedding images is not [URL][IMG]https://nsa40.casimages.com/img/2020/01/02/20010205233347999.jpg[/IMG][/URL]; it is ![](https://nsa40.casimages.com/img/2020/01/02/20010205233347999.jpg), which you could have seen by clicking the image button

For others’ reference, the image that @Elodie-CEMOI linked is: