automated variable highlighting/ code highlighting doesn't work anymore
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Marten Amschler
on 19 Jun 2021
Answered: Walter Roberson
on 19 Jun 2021
Dear community,
I am working on a huge prototype-project.I am creating a GUI using Guide (I know that this is not recommended). After some changes (added some buttons and filled their functions with life) i noticed that the Editor looks different...
After having a second look i noticed that no variables are highlighted anymore. Also the global variables are not turquise anymore. Also the backround is not yellow anymore, as it should be when you are seperation sections with "%%"
Here a screenshot of the previous and actual state:
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/658310/image.png)
usually this happens if there is a syntax error (e.g. if I am missing an "end" in a loop) or if I wrongly put a "return". But this time it might not be the case. The code and every function runs. No syntax error... I used the comparison function of matlab and checked every line I changed... but dind't find anything suspicious. Also the yellow "warnings" on the right side of the IDE don't help (also, there is no red "error").
Do you guys have any idea? Could I provide you any further information that would help?
greetings
Marten
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Accepted Answer
Walter Roberson
on 19 Jun 2021
I have a vague memory that the Code Analyzer (used to be called mlint https://www.mathworks.com/help/matlab/ref/mlint.html ) has a limit on the number of lines it analyzes automatically, and that was the same limit on what it could analyze for code folding.
Current non-interactive tool is checkcode()
and see also the code analyzer report (which creates interactive content iirc)
I do not know if there is a way of increasing the limit on the number of lines interactively analyzed; I would expect checkcode() to be able to handle larger files non-interactively.
Yes, that is a hint that you might not be getting errors and warnings that you should be getting when you are using more than 25K lines.
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