patch 9.0.0178: cursor position wrong with virtual text before Tab Commit: https://github.com/vim/vim/commit/e428fa04a758cc87ea580c856a796e58e407504b Author: Bram Moolenaar <Bram@vim.org> Date: Tue Aug 9 16:55:41 2022 +0100 patch 9.0.0178: cursor position wrong with virtual text before Tab Problem: Cursor position wrong with virtual text before Tab. Solution: Use the byte length, not the cell with, to compare the column. Correct tab size after text prop. (closes #10866)

| +0#0000e05#a8a8a8255@1|x+0#0000000#ffffff0@72
| +0#0000e05#a8a8a8255@1|x+0#0000000#ffffff0@1| @70
|=+0&#ffff4012|>>m+0&#ffffff0@3| @68
| +0#0000e05#a8a8a8255@1|y+0#0000000#ffffff0@3| @68
|~+0#4040ff13&| @73
| +0#0000000&@56|2|,|1| @10|A|l@1|