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Add undo/redo infrastructure and buffer management additions.

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This commit is contained in:
Kyle Isom
2025-11-29 22:48:31 -08:00
parent 40d33e1847
commit 1a72e2b312
16 changed files with 1000 additions and 73 deletions
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23
TerminalFrontend.cc
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@@ -10,11 +10,27 @@
bool
TerminalFrontend::Init(Editor &ed)
{
// Ensure Ctrl-S/Ctrl-Q reach the application by disabling XON/XOFF flow control
// Ensure Control keys reach the app: disable XON/XOFF and dsusp/susp bindings (e.g., ^S/^Q, ^Y on macOS)
{
struct termios tio{};
if (tcgetattr(STDIN_FILENO, &tio) == 0) {
// Save original to restore on shutdown
orig_tio_ = tio;
have_orig_tio_ = true;
// Disable software flow control so C-s/C-q work
tio.c_iflag &= static_cast<unsigned long>(~IXON);
#ifdef IXOFF
tio.c_iflag &= static_cast<unsigned long>(~IXOFF);
#endif
// Disable dsusp/susp characters so C-y (VDSUSP on macOS) and C-z don't signal-stop the app
#ifdef _POSIX_VDISABLE
#ifdef VSUSP
tio.c_cc[VSUSP] = _POSIX_VDISABLE;
#endif
#ifdef VDSUSP
tio.c_cc[VDSUSP] = _POSIX_VDISABLE;
#endif
#endif
(void) tcsetattr(STDIN_FILENO, TCSANOW, &tio);
}
}
@@ -78,5 +94,10 @@ TerminalFrontend::Step(Editor &ed, bool &running)
void
TerminalFrontend::Shutdown()
{
// Restore original terminal settings if we changed them
if (have_orig_tio_) {
(void) tcsetattr(STDIN_FILENO, TCSANOW, &orig_tio_);
have_orig_tio_ = false;
}
endwin();
}