patch 8.2.4338: an error from an expression mapping messes up the display Commit: https://github.com/vim/vim/commit/74a0a5b26d0180f3ea89e9495dff6a26f0df23cb Author: Bram Moolenaar <Bram@vim.org> Date: Thu Feb 10 14:07:41 2022 +0000 patch 8.2.4338: an error from an expression mapping messes up the display Problem: An error from an expression mapping messes up the display. Solution: When the expression results in an empty string return K_IGNORE. In cmdline mode redraw the command line. (closes #9726)

|x+0&#ffffff0@74
>m@3| @70
|y@3| @70
|~+0#4040ff13&| @73
|~| @73
|:+0#0000000&|s|i|g|n| |u|n|p|l|a|c|e| |1|0| @40|2|,|1| @10|A|l@1|