Code cell missing highlight on load

[ellisonbg]

Sometimes on load, cells can lack highlighting.

Update: Keeping old description about refresh below

The CodeMirror object has a refresh method that must be called in certain cases. This method must be called at very particular points or the CM editor starts to misbehave. Getting this right was one of the most difficult parts of making the notebook work. In the last week or so there have been changes in master (I wasn't running master until last night) that are causing refresh related problems:

• Sometimes the CM editor cell won't have the right vertical height until you click on a cell.
• When a notebook is first opened, the CM areas won't be properly syntax highlighted.

[minrk]

I haven't seen either of those effects, can you be more specific about reproducing the bad behavior?

I can't think of any focus-related changes in the past several weeks.

[ellisonbg]

Hmm, let me play with it a bit and see what I can come up with.

[fdeheeger]

I get such bug this morning (running the master). Here is some snapshots that shows this effect :

When you load the nb, you see that:

When you click on the cell, it shows colors:

[minrk]

Can you share the notebook (and browser info)? I can't seem to reproduce it here.

[ellisonbg]

I leave for my trip in a few minutes, so I probably won't get to this until
after I get to my destination.

On Tue, Jul 16, 2013 at 12:04 PM, Min RK notifications@github.com wrote:

Can you share the notebook (and browser info)? I can't seem to reproduce
it here.

—
Reply to this email directly or view it on GitHubhttps://github.com//issues/3636#issuecomment-21065407
.

Brian E. Granger
Cal Poly State University, San Luis Obispo
bgranger@calpoly.edu and ellisonbg@gmail.com

[fdeheeger]

It seems to be browser dependent. I do not have that bug with firefox (v22), but have it with chromium:
Version 28.0.1500.52 Ubuntu 12.04 (28.0.1500.52-0ubuntu1.12.04.2)

Super simple notebook:
https://gist.github.com/fdeheeger/6021564

[minrk]

Doesn't seem to affect Chrome 30 or Firefox 22 on OS X.

[ivanov]

does not affect Chrome 28.0.1500.72 m on Windows

[Carreau]

And suddenly I have it on chrome 29, whereas I've tried many time to reproduce it ... :-(

[Carreau]

And a call to refresh manually on faulty CM does not fix the problem. It might be due to ipython mode beeing defined in the background, so not defined yet when CM try to highlight hence it falls back to null-mode that does nothing.

[Carreau]

This also never triggers when my web-inspector is open and I reload. I have close the web-inspector (race condition somewhere?)