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Enable escape sequence on Windows10 console via pager too

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This commit is contained in:
Nobuyoshi Nakada 2020-12-21 18:09:45 +09:00
parent d8469507b9
commit b9d00f42e6
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GPG key ID: 7CD2805BFA3770C6
1 changed files with 19 additions and 2 deletions
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21
ruby.c
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@ -1647,6 +1647,23 @@ setup_pager_env(void)
if (!getenv("LESS")) ruby_setenv("LESS", "-R"); // Output "raw" control characters.
}
#ifdef _WIN32
static int
tty_enabled(void)
{
HANDLE h = GetStdHandle(STD_OUTPUT_HANDLE);
DWORD m;
if (!GetConsoleMode(h, &m)) return 0;
# ifndef ENABLE_VIRTUAL_TERMINAL_PROCESSING
# define ENABLE_VIRTUAL_TERMINAL_PROCESSING 0x200
# endif
if (!(m & ENABLE_VIRTUAL_TERMINAL_PROCESSING)) return 0;
return 1;
}
#elif !defined(HAVE_WORKING_FORK)
# define tty_enabled() 0
#endif
static VALUE
process_options(int argc, char **argv, ruby_cmdline_options_t *opt)
{
@ -1707,10 +1724,10 @@ process_options(int argc, char **argv, ruby_cmdline_options_t *opt)
int oldout = dup(1);
int olderr = dup(2);
int fd = RFILE(port)->fptr->fd;
tty = tty_enabled();
dup2(fd, 1);
dup2(fd, 2);
/* more.com doesn't support CSI sequence */
usage(progname, 1, 0, columns);
usage(progname, 1, tty, columns);
fflush(stdout);
dup2(oldout, 1);
dup2(olderr, 2);