Fix overtyping wide characters.
Overtyping the first half of a wide character with the second half of a wide character results in display garbage. This is because the trailing dummy is not cleaned up. i.e. ATTR_WIDE, ATTR_WDUMMY, ATTR_WDUMMY Here is a short script for demonstrating the behavior: #!/bin/sh alias printf=/usr/bin/printf printf こんにちは!; sleep 2 printf '\x1b[5D'; sleep 2 printf へ; sleep 2 printf ' '; sleep 2 echo
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st.c
4
st.c
@ -2507,6 +2507,10 @@ check_control_code:
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if (width == 2) {
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if (width == 2) {
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gp->mode |= ATTR_WIDE;
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gp->mode |= ATTR_WIDE;
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if (term.c.x+1 < term.col) {
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if (term.c.x+1 < term.col) {
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if (gp[1].mode == ATTR_WIDE && term.c.x+2 < term.col) {
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gp[2].u = ' ';
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gp[2].mode &= ~ATTR_WDUMMY;
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}
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gp[1].u = '\0';
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gp[1].u = '\0';
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gp[1].mode = ATTR_WDUMMY;
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gp[1].mode = ATTR_WDUMMY;
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}
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}
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