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Tab preserves, but does not set, wrap state when used in last col.

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Fixes vttest regression.
This commit is contained in:
Keith Winstein
2012-05-05 00:03:58 -04:00
parent a82f50f085
commit 3bdcc98ba4
1 changed files with 8 additions and 10 deletions
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src/terminal/terminalfunctions.cc
+8 -10
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@@ -191,17 +191,15 @@ void Ctrl_HT( Framebuffer *fb, Dispatcher *dispatch __attribute((unused)) )
{
int col = fb->ds.get_next_tab();
if ( col == -1 ) { /* no tabs, go to end of line */
/* A horizontal tab is the only operation that (1) can keep the wrap
flag but (2) starts a new grapheme. */
if ( fb->ds.get_cursor_col() == fb->ds.get_width() - 1 ) {
fb->ds.move_col( fb->ds.get_width() - 1, false );
fb->ds.move_col( 1, true, true );
} else {
fb->ds.move_col( fb->ds.get_width() - 1, false );
}
} else {
fb->ds.move_col( col, false );
col = fb->ds.get_width() - 1;
}
/* A horizontal tab is the only operation that preserves but
does not set the wrap state. It also starts a new grapheme. */
bool wrap_state_save = fb->ds.next_print_will_wrap;
fb->ds.move_col( col, false );
fb->ds.next_print_will_wrap = wrap_state_save;
}
static Function func_Ctrl_HT( CONTROL, "\x09", Ctrl_HT, false );