Fix for wide character being incorrectly cleared on MODE_INSERT
commit3a6d6d740110e6ee1b092d05ad746244eedabe4b
authorShi Tian <shitian@cock.li>
Sun, 25 Jun 2023 05:38:33 +0000 (25 05:38 +0000)
committerHiltjo Posthuma <hiltjo@codemadness.org>
Sun, 25 Jun 2023 09:59:06 +0000 (25 11:59 +0200)
tree647f374b1935e0f10915e787325021b0f48adf58
parent211964d56ee00a7d46e251cbc150afb79138ae37
Fix for wide character being incorrectly cleared on MODE_INSERT

Under insert mode, when inserting a normal character in front of
a wide character, the affected region is shifted to the right by
one cell. However, the empty cell is reset as if being a part of a
wide character, causing the following cell being mishandled as a
dummy cell.
To reproduce the bug:
printf '\033[4h' # set MODE_INSERT
printf 妳好
printf '\033[4D'
printf 'x'
printf '\033[4l\n'
st.c