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VirtualConsole: Support the 'A' and 'D' CSI sequences.

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This makes backspace work correctly when line editing with bash-2.05b.
This commit is contained in:
Andreas Kling 2018-12-07 01:19:02 +01:00
parent a8c7b6ce86
commit 4f6438ec66
5 changed files with 47 additions and 7 deletions
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13
Kernel/VirtualConsole.cpp
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@ -281,6 +281,17 @@ void VirtualConsole::escape$A(const Vector<unsigned>& params)
set_cursor(new_row, m_cursor_column);
}
void VirtualConsole::escape$D(const Vector<unsigned>& params)
{
int num = 1;
if (params.size() >= 1)
num = params[0];
int new_column = (int)m_cursor_column - num;
if (new_column < 0)
new_column = 0;
set_cursor(m_cursor_row, new_column);
}
void VirtualConsole::escape$J(const Vector<unsigned>& params)
{
int mode = 0;
@ -319,6 +330,8 @@ void VirtualConsole::execute_escape_sequence(byte final)
params.append(value);
}
switch (final) {
case 'A': escape$A(params); break;
case 'D': escape$D(params); break;
case 'H': escape$H(params); break;
case 'J': escape$J(params); break;
case 'm': escape$m(params); break;