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LibVT+Everywhere: Introduce 'automarks' and 'clear previous command'

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Automarks are similar to bookmarks placed by the terminal, allowing the
user to selectively remove a single command and its output from the
terminal scrollback.
This commit implements a single way to add marks: automatically placing
them when the shell becomes interactive.

To make sure the shell behaves correctly after its expected prompt
position changes, the terminal layer forces a resize event to be passed
to the shell on such (possibly) partial clears; this also has the nice
side effect of fixing the disappearing prompt on the preexisting "clear
including history" action: Fixes #4192.
This commit is contained in:
Ali Mohammad Pur 2024-02-06 01:41:35 +03:30 • committed by Ali Mohammad Pur
parent cde528fdd9
commit 54ab6fe5b9
12 changed files with 238 additions and 0 deletions
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10
Userland/Applications/Terminal/main.cpp
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@ -284,6 +284,8 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
window->set_obey_widget_min_size(false);
auto terminal = window->set_main_widget<VT::TerminalWidget>(ptm_fd, true);
terminal->set_startup_process_id(shell_pid);
terminal->on_command_exit = [&] {
app->quit(0);
};
@ -309,6 +311,13 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
terminal->set_bell_mode(VT::TerminalWidget::BellMode::Visible);
}
auto automark = Config::read_string("Terminal"sv, "Terminal"sv, "AutoMark"sv, "MarkInteractiveShellPrompt"sv);
if (automark == "MarkNothing") {
terminal->set_auto_mark_mode(VT::TerminalWidget::AutoMarkMode::MarkNothing);
} else {
terminal->set_auto_mark_mode(VT::TerminalWidget::AutoMarkMode::MarkInteractiveShellPrompt);
}
auto cursor_shape = VT::TerminalWidget::parse_cursor_shape(Config::read_string("Terminal"sv, "Cursor"sv, "Shape"sv, "Block"sv)).value_or(VT::CursorShape::Block);
terminal->set_cursor_shape(cursor_shape);
@ -399,6 +408,7 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
window->set_fullscreen(!window->is_fullscreen());
}));
view_menu->add_action(terminal->clear_including_history_action());
view_menu->add_action(terminal->clear_to_previous_mark_action());
auto adjust_font_size = [&](float adjustment, Gfx::Font::AllowInexactSizeMatch preference) {
auto& font = terminal->font();