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LibLine: Reset suggestion state on any non-tab key

Browse source 
This fixes the following (and more!):
```sh
$ /bin/dis<tab><tab><backspace><backspace><backspace><backspace><tab>
$ /bink_benchmark
```
This commit is contained in:
AnotherTest 2020-08-31 22:04:32 +04:30 committed by Andreas Kling
parent 7e72285049
commit 084a5c6a90
Notes: sideshowbarker 2024-07-19 02:57:20 +09:00 
Author: https://github.com/alimpfard
Commit: https://github.com/SerenityOS/serenity/commit/084a5c6a904
Pull-request: https://github.com/SerenityOS/serenity/pull/3369
Reviewed-by: https://github.com/nico
2 changed files with 33 additions and 18 deletions
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50
Libraries/LibLine/Editor.cpp
View file

@ -27,6 +27,7 @@
#include "Editor.h"
#include <AK/GenericLexer.h>
#include <AK/JsonObject.h>
#include <AK/ScopeGuard.h>
#include <AK/StringBuilder.h>
#include <AK/Utf32View.h>
#include <AK/Utf8View.h>
@ -653,14 +654,18 @@ void Editor::handle_read_event()
// There's nothing interesting to do here.
}
}
cleanup_suggestions();
continue;
}
}
case InputState::GotEscapeFollowedByLeftBracket:
switch (code_point) {
case 'O': // mod_ctrl
if (code_point == 'O') {
// mod_ctrl
ctrl_held = true;
continue;
}
cleanup_suggestions();
switch (code_point) {
case 'A': // ^[[A: arrow up
search_backwards();
m_state = InputState::Free;
@ -721,11 +726,15 @@ void Editor::handle_read_event()
case InputState::Free:
if (code_point == 27) {
m_state = InputState::GotEscape;
cleanup_suggestions();
continue;
}
break;
}
// There are no sequences past this point, so short of 'tab', we will want to cleanup the suggestions.
ArmedScopeGuard suggestion_cleanup { [this] { cleanup_suggestions(); } };
// Normally ^D. `stty eof \^n` can change it to ^N (or something else), but Serenity doesn't have `stty` yet.
// Process this here since the keybinds might override its behaviour.
if (code_point == m_termios.c_cc[VEOF] && m_cursor == 0) {
@ -742,6 +751,8 @@ void Editor::handle_read_event()
m_search_offset = 0; // reset search offset on any key
if (code_point == '\t' || reverse_tab) {
suggestion_cleanup.disarm();
if (!on_tab_complete)
continue;
@ -840,22 +851,6 @@ void Editor::handle_read_event()
continue;
}
if (m_times_tab_pressed) {
// Apply the style of the last suggestion.
readjust_anchored_styles(m_suggestion_manager.current_suggestion().start_index, ModificationKind::ForcedOverlapRemoval);
stylize({ m_suggestion_manager.current_suggestion().start_index, m_cursor, Span::Mode::CodepointOriented }, m_suggestion_manager.current_suggestion().style);
// We probably have some suggestions drawn,
// let's clean them up.
if (m_suggestion_display->cleanup()) {
reposition_cursor();
m_refresh_needed = true;
}
m_suggestion_manager.reset();
suggest(0, 0, Span::CodepointOriented);
m_suggestion_display->finish();
}
m_times_tab_pressed = 0; // Safe to say if we get here, the user didn't press TAB
insert(code_point);
}
@ -867,6 +862,25 @@ void Editor::handle_read_event()
}
}
void Editor::cleanup_suggestions()
{
if (m_times_tab_pressed) {
// Apply the style of the last suggestion.
readjust_anchored_styles(m_suggestion_manager.current_suggestion().start_index, ModificationKind::ForcedOverlapRemoval);
stylize({ m_suggestion_manager.current_suggestion().start_index, m_cursor, Span::Mode::CodepointOriented }, m_suggestion_manager.current_suggestion().style);
// We probably have some suggestions drawn,
// let's clean them up.
if (m_suggestion_display->cleanup()) {
reposition_cursor();
m_refresh_needed = true;
}
m_suggestion_manager.reset();
suggest(0, 0, Span::CodepointOriented);
m_suggestion_display->finish();
}
m_times_tab_pressed = 0; // Safe to say if we get here, the user didn't press TAB
}
bool Editor::search(const StringView& phrase, bool allow_empty)
{

1
Libraries/LibLine/Editor.h
View file

@ -335,6 +335,7 @@ private:
void refresh_display();
void cleanup();
void cleanup_suggestions();
void really_quit_event_loop();
void restore()