Incomprehensible output on screen size change for program that draws

[allgreed]

I use entr to work with taskwarrior so that on one terminal I can see a task report and interact with it on another terminal, like so:
ls ~/.task/pending.data | entr -c task ...

The problem is that when I alter the layout on my workspace anyhow (I add a terminal for example) the terminal gets crudely resized and the output doesn't reflow.

I was trying to solve this on the end user side, however, I see no easy way of doing this. I'd love to handle SIGWINCH on my own and just trigger entr rerun, however I cannot catch the signal from the parent script (my script which calls entr). Therefore, I think entr itself would be a good place to handle such signal (to trigger utility rerun), preferably gated by a command line option.

Would you welcome such a PR?

[eradman]

Yes, I agree that entr is in a good place to handle this signal. The questions are, should this feature be

1. activated using a command line option or an environment variable
2. specific to SIGWINCH, or any several signal numbers

Feel free to make a suggestion, I'll reply again with my inclination after thinking on this.

[eradman]

I think we should add support for a new environment variable ENTR_TRIGGER_SIGNAL, which allows one of the following to be specified by number:

19  CONT Continued
28  WINCH Window size changes
30  USR1 User defined signal 1
31  USR2 User defined signal 2