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qemu-options: Rework the help text of the '-display' option

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Improve the help text of the "-display" option:

- Only print the options that we have enabled in the binary
  (similar to what we do for other options like -netdev already)

- The "frame=on|off" from "-display sdl" has been removed in commit
  09bd7ba9f5 ("Remove deprecated -no-frame option"), so we should
  not show this in the help text anymore

- The "-display egl-headless" line was missing a "\n" at the end

- Indent the default display text in a nicer way

Signed-off-by: Thomas Huth <huth@tuxfamily.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-id: 20191023120129.13721-1-huth@tuxfamily.org
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Thomas Huth 2019-10-23 14:01:28 +02:00 committed by Gerd Hoffmann
parent 36609b4fa3
commit 88b40c683f
1 changed files with 25 additions and 13 deletions
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38
qemu-options.hx
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@ -1546,26 +1546,38 @@ STEXI
ETEXI
DEF("display", HAS_ARG, QEMU_OPTION_display,
#if defined(CONFIG_SPICE)
"-display spice-app[,gl=on|off]\n"
"-display sdl[,frame=on|off][,alt_grab=on|off][,ctrl_grab=on|off]\n"
#endif
#if defined(CONFIG_SDL)
"-display sdl[,alt_grab=on|off][,ctrl_grab=on|off]\n"
" [,window_close=on|off][,gl=on|core|es|off]\n"
"-display gtk[,grab_on_hover=on|off][,gl=on|off]|\n"
"-display vnc=<display>[,<optargs>]\n"
"-display curses[,charset=<encoding>]\n"
"-display none\n"
"-display egl-headless[,rendernode=<file>]"
" select display type\n"
"The default display is equivalent to\n"
#endif
#if defined(CONFIG_GTK)
"\t\"-display gtk\"\n"
"-display gtk[,grab_on_hover=on|off][,gl=on|off]|\n"
#endif
#if defined(CONFIG_VNC)
"-display vnc=<display>[,<optargs>]\n"
#endif
#if defined(CONFIG_CURSES)
"-display curses[,charset=<encoding>]\n"
#endif
#if defined(CONFIG_OPENGL)
"-display egl-headless[,rendernode=<file>]\n"
#endif
"-display none\n"
" select display backend type\n"
" The default display is equivalent to\n "
#if defined(CONFIG_GTK)
"\"-display gtk\"\n"
#elif defined(CONFIG_SDL)
"\t\"-display sdl\"\n"
"\"-display sdl\"\n"
#elif defined(CONFIG_COCOA)
"\t\"-display cocoa\"\n"
"\"-display cocoa\"\n"
#elif defined(CONFIG_VNC)
"\t\"-vnc localhost:0,to=99,id=default\"\n"
"\"-vnc localhost:0,to=99,id=default\"\n"
#else
"\t\"-display none\"\n"
"\"-display none\"\n"
#endif
, QEMU_ARCH_ALL)
STEXI