pycoverage adds "space" when activating region

[kootenpv]

When using pycoverage (after a my-coverage call), somehow whenever I mark something, the cursor jumps around (adding a space). When turned off transient-mark-mode the problem disappears, but I cannot see the region. When I turn it back on, then the problem is still there.

It really makes it unusable :( Note that it only happens after a couple of times using pytest with --cov in emacs, and a couple of times of my-coverage. It's unfortunately persisting across new boot.

Have you seen something like this?

Added a screenshot, where you can see the letter "i" that's marked has moved one space to the right. It was indented just fine. When I stop the region, it jumps back to its place.

[TauPan]

I see the same or a similar problem whenever I edit covered filed (i.e. the coverage becomes outdated). I happen to use git-gutter-mode and do not have linum-mode enabled globally. The problem disappears (but git-gutter breaks) if I use (git-gutter:linum-setup) instead of enabling it globally.

The problem also disappears if I add a fallback condition to pycoverage-line-format as follows:

(defun pycoverage-line-format (linenum)
  (cond
   ((member linenum pycoverage-data)
    (propertize "❌" 'face '(:background " " :foreground "red")))
   (pycoverage-data
    ;; covered data
    (propertize "✓" 'face '(:background " " :foreground "green")))
   (t (propertize "0" 'face '(:background "grey" :foreground " ")))))

(I added the characters and changed the configuration a bit to make the three cases visually more distinguished.)

@kootenpv do you have a similar setup and does my change help in your case?

[kootenpv]

@TauPan Just wondering... what would be the fix without colourization? I'd be glad to give it a try.

[TauPan]

Just the final t clause in the cond. I can post code later.

Pascal van Kooten [email protected] schrieb am Do., 5. Apr. 2018, 15:39:

@TauPan https://github.com/TauPan Just wondering... what would be the fix without colourization?

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