Jason Franklin wrote:
> I noticed after upgrading my Vim installation that messages from my plugins
> were appearing in odd places. I finally had the time to look into it and
> isolate the issue.
>
> Patch 7.4.1696 introduced the "clearmode()" function. The ":stopinsert"
> command invokes this function to clear the "-- INSERT --" indicator from the
> bottom of the screen.
>
> The "clearmode()" function will sometimes disturb the flow of Vim messages
> because it calls a function that changes the coordinates ("msg_col" and
> "msg_row") for message output. This effect is visible when the 'cmdheight'
> setting is higher than 1.
>
> Reproduce the issue as follows (using "vim -u NONE"):
>
> 1 :set cmdheight=2
> 2 :vnew
> 3 :autocmd BufEnter <buffer> stopinsert
> 4 :wincmd w | echo 'test'
> 5 :wincmd w | echo 'test'
>
> Note that on #4 'test' replaced the entered command, but not on #5. The
> behavior of #4 is what was seen in Vim prior to patch 7.4.1696.
>
> A simpler series of commands to observe the problem is:
>
> 1 :set cmdheight=2
> 2 :stopinsert | echo 'test'
>
> Note that 'test' should have overwritten the command.
>
> The patch that is attached to this email modifies "clearmode()" to save and
> restore the message output coordinates so that the flow of message output is
> not disturbed whenever the mode indicator is cleared from the screen.
>
> As usual, a test is included in the patch to ensure that this problem
> remains fixed in future versions of Vim.
Thanks, looks like a good patch, I'll include it.
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