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Support OSC 52 clipboard updates from tmux & others #1054

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Support OSC 52 clipboard updates from tmux & others #1054

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22 changes: 16 additions & 6 deletions src/terminal/terminalfunctions.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -55,7 +55,7 @@ static void CSI_EL( Framebuffer *fb, Dispatcher *dispatch )
{
switch ( dispatch->getparam( 0, 0 ) ) {
case 0: /* default: active position to end of line, inclusive */
clearline( fb, -1, fb->ds.get_cursor_col(), fb->ds.get_width() - 1 );
clearline( fb, -1, fb->ds.get_cursor_col(), fb->ds.get_width() - 1 );
break;
case 1: /* start of screen to active position, inclusive */
clearline( fb, -1, 0, fb->ds.get_cursor_col() );
Expand Down Expand Up @@ -257,7 +257,7 @@ static void CSI_TBC( Framebuffer *fb, Dispatcher *dispatch )
int param = dispatch->getparam( 0, 0 );
switch ( param ) {
case 0: /* clear this tab stop */
fb->ds.clear_tab( fb->ds.get_cursor_col() );
fb->ds.clear_tab( fb->ds.get_cursor_col() );
break;
case 3: /* clear all tab stops */
fb->ds.clear_default_tabs();
Expand Down Expand Up @@ -591,12 +591,22 @@ static Function func_CSI_DECSTR( CSI, "!p", CSI_DECSTR );
/* xterm uses an Operating System Command to set the window title */
void Dispatcher::OSC_dispatch( const Parser::OSC_End *act __attribute((unused)), Framebuffer *fb )
{
/* handle osc copy clipboard sequence 52;c; */
/*
* Handle OSC copy clipboard sequence 52;c; and variants. Note: While we
* accept other options (including those emitted by tmux), mosh currently
* does not preserve those options across the connection.
**/
if ( OSC_string.size() >= 5 && OSC_string[ 0 ] == L'5' &&
OSC_string[ 1 ] == L'2' && OSC_string[ 2 ] == L';' &&
OSC_string[ 3 ] == L'c' && OSC_string[ 4 ] == L';') {
OSC_string[ 1 ] == L'2' && OSC_string[ 2 ] == L';') {
// Consider at most the first 64 bytes for options.
size_t i = std::min<size_t>(64, OSC_string.size() - 1);
// Search string backwards until we find a ';', marking the end of
// options. This works since the clipboards contents are base64 encoded,
// and cannot contain ';' in the encoded form.
for (; i >= 2 && OSC_string[i] != ';'; i--) {}
i++;
Terminal::Framebuffer::title_type clipboard(
OSC_string.begin() + 5, OSC_string.end() );
OSC_string.begin() + i, OSC_string.end() );
fb->set_clipboard( clipboard );
/* handle osc terminal title sequence */
} else if ( OSC_string.size() >= 1 ) {
Expand Down