On 4/15/19 9:24 AM, Jeenu wrote:
Sometimes, after I attach to a tmux session, visual selection in an already-running vim instance is shown as underlined instead of reversed. See the attached files for the difference; both are from the same host - one from new, and the other from existing session. The only way out I've found is to quit and launch vim again. Does any one know why this happens and/or how to fix it?

This sounds to me like screen is loosing state and not (re)displaying things properly after some condition.

I would bet another order of magnitude that this is the case if you visually select something so it's highlighted, change screen (disconnect / switch screens), change screen back (reconnect / switch back), and what was highlighted is now underlined.

This is the same problem as someone had posted a while ago: https://superuser.com/questions/1186500/vim-visually-selected-text-sometimes-appears-as-underlined-not-reversed

This seems to have the same symptoms to me.

You can probably test vim, if not eliminate it from the scenario, by playing with ANSI control codes at a command line and see if the symptoms are the same as vim when changing screen (see above).



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