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Do not set O_NONBLOCK on stdin

Browse Source 
It is not necessary, and impacts also writing to stdout, leading
to broken display on old ncurses versions.

Fixes #3087
This commit is contained in:
Maxime Coste 2019-09-25 20:33:01 +10:00
parent de3ff78b22
commit 9c2d2ad694
2 changed files with 0 additions and 7 deletions
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6
src/ncurses_ui.cc
View File

@ -361,7 +361,6 @@ NCursesUI::NCursesUI()
}},
m_assistant(assistant_clippy)
{
m_original_stdin_flags = fcntl(STDIN_FILENO, F_GETFL, 0);
tcgetattr(STDIN_FILENO, &m_original_termios);
initscr();
@ -386,7 +385,6 @@ NCursesUI::~NCursesUI()
m_palette.set_change_colors(false);
endwin();
tcsetattr(STDIN_FILENO, TCSAFLUSH, &m_original_termios);
fcntl(STDIN_FILENO, F_SETFL, m_original_stdin_flags);
set_signal_handler(SIGWINCH, SIG_DFL);
set_signal_handler(SIGCONT, SIG_DFL);
set_signal_handler(SIGTSTP, SIG_DFL);
@ -406,11 +404,9 @@ void NCursesUI::suspend()
sigaddset(&unblock_sigtstp, SIGTSTP);
sigprocmask(SIG_UNBLOCK, &unblock_sigtstp, &old_mask);
tcsetattr(STDIN_FILENO, TCSAFLUSH, &m_original_termios);
fcntl(STDIN_FILENO, F_SETFL, m_original_stdin_flags);
raise(SIGTSTP); // suspend here
m_original_stdin_flags = fcntl(STDIN_FILENO, F_GETFL, 0);
tcsetattr(STDIN_FILENO, TCSAFLUSH, &m_original_termios);
set_signal_handler(SIGTSTP, current);
sigprocmask(SIG_SETMASK, &old_mask, nullptr);
@ -424,8 +420,6 @@ void NCursesUI::suspend()
void NCursesUI::set_raw_mode() const
{
fcntl(STDIN_FILENO, F_SETFL, m_original_stdin_flags | O_NONBLOCK);
termios attr = m_original_termios;
attr.c_iflag &= ~(IGNBRK | BRKINT | PARMRK | ISTRIP | INLCR | IGNCR | ICRNL | IXON);
attr.c_oflag &= ~OPOST;

1
src/ncurses_ui.hh
View File

@ -121,7 +121,6 @@ private:
DisplayCoord m_dimensions;
termios m_original_termios{};
int m_original_stdin_flags;
void set_raw_mode() const;