Commit Graph

145 Commits

Author SHA1 Message Date
Hiltjo Posthuma
a2a704492b config.def.h: add an option allowwindowops, by default off (secure)
Similar to the xterm AllowWindowOps option, this is an option to allow or
disallow certain (non-interactive) operations that can be insecure or
exploited.

NOTE: xsettitle() is not guarded by this because st does not support printing
the window title. Else this could be exploitable (arbitrary code execution).
Similar problems have been found in the past in other terminal emulators.

The sequence for base64-encoded clipboard copy is now guarded because it allows
a sequence written to the terminal to manipulate the clipboard of the running
user non-interactively, for example:

printf '\x1b]52;0;ZWNobyBoaQ0=\a'
2020-05-30 22:06:15 +02:00
k0ga
bda9c9ffa6 Make shift+wheel behaves as shift+Prev/Next
St uses a very good hack where mouse wheel genereates ^Y and ^E,
that are the same keys that less and vi uses for backward and
fordward scrolling. Scroll, as many terminal emulators, use
shift+Prev/Next for scrolling, but it is also using ^E and ^Y
for scroling, characters that are reserved in the POSIX shell
in emacs mode for end of line and yanking, making scroll unsable
in st.

This patch adds a new hack, making shift+wheel returning the
same sequences than shift+Prev/Next, meaning that scroll or
any other similar program will not be able to differentiate
between them.
2020-05-16 12:37:14 +02:00
Avi Halachmi (:avih)
1d59091065 auto-sync: draw on idle to avoid flicker/tearing
st could easily tear/flicker with animation or other unattended
output. This commit eliminates most of the tear/flicker.

Before this commit, the display timing had two "modes":

- Interactively, st was waiting fixed `1000/xfps` ms after forwarding
  the kb/mouse event to the application and before drawing.

- Unattended, and specifically with animations, the draw frequency was
  throttled to `actionfps`. Animation at a higher rate would throttle
  and likely tear, and at lower rates it was tearing big frames
  (specifically, when one `read` didn't get a full "frame").

The interactive behavior was decent, but it was impossible to get good
unattended-draw behavior even with carefully chosen configuration.

This commit changes the behavior such that it draws on idle instead of
using fixed latency/frequency. This means that it tries to draw only
when it's very likely that the application has completed its output
(or after some duration without idle), so it mostly succeeds to avoid
tear, flicker, and partial drawing.

The config values minlatency/maxlatency replace xfps/actionfps and
define the range which the algorithm is allowed to wait from the
initial draw-trigger until the actual draw. The range enables the
flexibility to choose when to draw - when least likely to flicker.

It also unifies the interactive and unattended behavior and config
values, which makes the code simpler as well - without sacrificing
latency during interactive use, because typically interactively idle
arrives very quickly, so the wait is typically minlatency.

While it only slighly improves interactive behavior, for animations
and other unattended-drawing it improves greatly, as it effectively
adapts to any [animation] output rate without tearing, throttling,
redundant drawing, or unnecessary delays (sounds impossible, but it
works).
2020-05-09 13:53:50 +02:00
Hiltjo Posthuma
d66bd405c0 config.def.h: add a comment for the scroll variable 2020-04-11 15:23:23 +02:00
Roberto E. Vargas Caballero
21e0d6e8b8 Add support for scroll(1)
Scroll is a program that stores all the lines of its child and be used in st as
a way of implementing scrollback.

This solution is much better than implementing the scrollback in st itself
because having a different program allows to use it in any other program
without doing modifications to those programs.
2020-04-11 15:23:20 +02:00
Avi Halachmi (:avih)
d2b75db8d7 mouse shortcuts: don't hardcode selpaste
Because selpaste is activated on release, a release flag was added to
mouse shortcuts which controls whether activation is on press/release,
and selpaste binding to button2 was moved to config.h .

button1 remains the only hardcoded mouse button - for selection + copy.
2019-10-13 21:46:31 +02:00
Avi Halachmi (:avih)
b6d280de6d mouse shortcuts: allow override for all shortcuts
Allow forceselmod to override all mouse shortcuts rather than only
selection, and rename it to forcemousemod as it's now more appropriate.

This will affect mouse shortcuts which use mask other than XK_ANY_MOD.

This does not affect the default behavior because the default mouse
shortcuts (wheel) use XK_ANY_MOD, where forceselmod already activated
the override also before this change.

Previously, if a mouse shortcut was configured with a specific mod and
forceselmod was held, then the shortcut did not execute unless the
configured mod included forceselmod.
2019-10-13 21:46:31 +02:00
Avi Halachmi (:avih)
ba7f4d69af mouse shortcuts: allow same functions as kb shortcuts
Previously mouse shortcuts supported only ttywrite.

This required adding an "Arg" function ttysend - which does what the
original mouse shortcuts did.
2019-10-13 21:46:31 +02:00
Hiltjo Posthuma
2b8333f553 config.def.h: remove crlf value section
this is not used anymore.

patch sent as an ed script using RFC2549 by k0ga.
2019-08-26 17:58:47 +02:00
Hiltjo Posthuma
21367a040f revert part of commit add0211522
"use iswspace()/iswpunct() to find word delimiters

    this inverts the configuration logic: you no longer provide a list of
    delimiters -- all space and punctuation characters are considered
    delimiters, unless listed in extrawordchars."

Feedback from IRC and personal preference.
2019-03-15 20:40:16 +01:00
Hiltjo Posthuma
927621f6da config.def.h: tweak extra worddelimiters
This changes the selection more like xterm.
To test try: "find /" and select a path.
2019-03-15 12:31:54 +01:00
Lauri Tirkkonen
add0211522 use iswspace()/iswpunct() to find word delimiters
this inverts the configuration logic: you no longer provide a list of
delimiters -- all space and punctuation characters are considered
delimiters, unless listed in extrawordchars.
2019-03-15 12:25:13 +01:00
Lauri Tirkkonen
d5efd256aa replace utf8strchr with wcschr 2019-03-15 12:24:13 +01:00
Hiltjo Posthuma
3be4cf11d7 config: add Shift+Insert as selpaste() again
This was changed before in:
commit 20f713548d on Wed Jan 25 19:17:38 2017
2019-01-10 18:16:17 +01:00
Quentin Rameau
67d0cb65d0 Remove the ISO 14755 feature
And move it to the patches section.
Keeping it would force to add an exec pledge on OpenBSD, and some
people think it's bloated, so bye!
2018-09-11 19:05:55 +02:00
Hiltjo Posthuma
8ed7a4b3b7 Revert "Make cursor follow text color"
This reverts commit b51bcd5553.
2018-07-17 20:01:57 +02:00
Jules Maselbas
b51bcd5553 Make cursor follow text color 2018-07-14 12:49:37 +02:00
Devin J. Pohly
30683c70ab Limit usage of extern to config.h globals
Prefer passing arguments to declaring external global variables.  The
only remaining usage of extern is for config.h variables which are
needed in st.c instead of x.c (where it is now included).

Signed-off-by: Devin J. Pohly <djpohly@gmail.com>
2018-02-25 21:56:26 -06:00
Devin J. Pohly
33201ac65f Move CRLF input processing into ttywrite
This also allows us to remove the crlf field from the Key struct, since
the only difference it made was converting "\r" to "\r\n" (which is now
done automatically in ttywrite).  In addition, MODE_CRLF is no longer
referenced from x.c.

Signed-off-by: Devin J. Pohly <djpohly@gmail.com>
2018-02-25 21:53:24 -06:00
Devin J. Pohly
65976c1a29 Move config.h include from st.c to x.c
config.h includes references to KeySyms and other X stuff.  Until we
come up with a cleaner way to separate configuration, it is simpler
(leads to more code removal) to have this here.

Signed-off-by: Devin J. Pohly <djpohly@gmail.com>
2018-02-25 21:53:24 -06:00
Devin J. Pohly
ed132e1127 Move key-matching functions into x.c
Modifiers and keysyms are specific to X, and the functions match and
kmap are only used in x.c.  Needed to global-ize the key arrays and
lengths from config.h (for now).

Signed-off-by: Devin J. Pohly <djpohly@gmail.com>
2018-02-25 21:53:24 -06:00
Devin J. Pohly
626b0ae40c Move window urgency handling entirely into x.c
This allows us to make xseturgency internal.

Signed-off-by: Devin J. Pohly <djpohly@gmail.com>
2018-02-25 21:53:24 -06:00
Roberto E. Vargas Caballero
20f713548d Change default keybindings
CTRL+SHIFT is an impossible combination in the terminal world
(0x20 | x & 0x1F), so it is perfect to be used for internals
shortcuts of terminals, and being a double combination
reduces the prossibility of having comflicts.
2017-01-25 19:17:38 +01:00
Michael Forney
e2ee5ee611 Split X-specific code into x.c 2017-01-20 19:42:26 -08:00
fpqc
c63a87cd93 Move column and row default numbers into config.h 2016-12-16 10:50:23 +01:00
Manuel Tobias Schiller
740ada1447 make the various combinations of arrow keys and shift/control/meta work
When using st with screen, I've bound next, prev, new screen to
combinations like Ctrl-Alt-Right,Left,Down; xterm and (u)rxvt work fine
when this combination of modifiers is pressed, st does not seem to
transport all of them; a single modifier key is fine (e.g. Ctrl-Up,
Alt-Down etc., but combinations are not). While I'm not terribly
familiar with this, I have tried to hack config.h in a more or less
systematic way to generate the expected sequences.
2016-11-14 19:58:02 +01:00
Quentin Rameau
8c99915608 Do not use color when font attributes are supported
If fontconfig gives us a font without the attributes we asked for,
display an alternative color instead.
2016-10-23 17:56:46 +02:00
Quentin Rameau
68bae9c7b1 Add support for iso14755
We launch dmenu for getting a codepoint, then convert it and send it to
the terminal.
2016-10-18 13:32:36 +02:00
Christoph Lohmann
308bfbf6be Change who's expanding tabs. 2016-07-20 13:56:15 +02:00
Christoph Lohmann
c4f245eccd Add some hint to have the pseudo terminal in the right mode.
If you don't make sure that the terminal does not expand tabs to spaces, of
course such a setting won't work.
2016-07-20 13:52:31 +02:00
Christoph Lohmann
2251f6465a Add comment about tabspaces.
st.info needs to be changed too, when tabspaces are changed.
2016-07-20 13:00:43 +02:00
Alive 4ever
235b438e68 Consistent Alt+BackSpace behavior
The default config specifies BackSpace as "\177". The default behavior
should persist across modifier keys, commonly Mod1 (Alt or Meta) which
is widely used to delete a word on readline and text editors, notably
Emacs.

This will make Alt+BackSpace behaves as expected, i.e. sends "\033\177"
instead of "\033\010" as previous default behavior.

Signed-off-by: Christoph Lohmann <20h@r-36.net>
2016-07-12 15:25:08 +02:00
Christoph Lohmann
6d8f85232e I like empty lines. 2016-03-08 13:55:22 +01:00
Ryusei Yamaguchi
034a5c8a09 Measure the single advance width with a heuristic method
This fix is needed to use dual-width fonts, which have double-width
glyphs (e.g. CJK unified ideographs).

Signed-off-by: Ryusei Yamaguchi <mandel59@gmail.com>
Signed-off-by: Christoph Lohmann <20h@r-36.net>
2016-03-08 13:46:42 +01:00
Christoph Lohmann
e2aa03e6b7 Now the Shortcuts are more consistent.
Keep the debile happy.
2015-10-31 09:29:04 +01:00
Christoph Lohmann
a2a60f0a2c Make the cursor shapes more descriptive.
»IBeam« is now »Bar« because it's named like that in the source code.
2015-10-05 23:05:38 +02:00
Christoph Lohmann
52d0e82df7 Snowman is everywhere. 2015-10-05 22:59:04 +02:00
Christoph Lohmann
78b04865fb Style normalisation in the config.def.h.
This adds an awareness commit for the big key array too.
2015-10-05 22:54:44 +02:00
Christoph Lohmann
f7b80caebe The definition of the reverse cursor is now up to the user. 2015-10-05 22:38:19 +02:00
Christoph Lohmann
bf8c71e429 The times of bad fonts are over.
The antialiasing was false due to circumstances that do not exist anymore. We
need antialiasing on big screens with big fonts. Autohinting too.
2015-09-12 16:43:32 +02:00
Roberto E. Vargas Caballero
a1ed5071e5 Change Pause to Break in shortcut for serial break 2015-09-08 17:02:15 +02:00
Jan Christoph Ebersbach
3ba9c8fc3f Expose cursor shape in config.def.h
Signed-off-by: Christoph Lohmann <20h@r-36.net>
2015-09-08 16:29:05 +02:00
Roberto E. Vargas Caballero
1f087aa8b7 Add key to send a break to the serial line 2015-09-08 12:10:11 +02:00
Roberto E. Vargas Caballero
473326f2e3 Set default values of stty according to the man page
This configuration is basically 38400 8N1, without echo and
in raw mode. Kernel will not process any of the characters
sent by the user.
2015-09-08 10:47:31 +02:00
Alex Kozadaev
ee5cad439b Adding mouse colour/shape settings 2015-07-28 12:21:11 +02:00
Mytchel Hammond
1d348e98e3 added note about the low precedence of shell to config.def.h 2015-07-24 08:15:55 +02:00
FRIGN
9de853a98d Unboolify st
This practice proved itself in sbase, ubase and a couple of other
projects.
Also remove the True and False defined in X11 and FcTrue and FcFalse
defined in Fontconfig.

Signed-off-by: Christoph Lohmann <20h@r-36.net>
2015-07-09 18:34:46 +02:00
Quentin Rameau
bdd649a102 do not truncate font size when zooming 2015-06-19 11:49:13 +02:00
Roberto E. Vargas Caballero
215bdb2da3 Add tty line support
Not always is desirable to create a pseudo terminal, and some times
we want to open a terminal emulator over a tty line. With this new
patch is possible to do someting like:

	$ st -l /dev/ttyS0 115200

Without this option was needed to launch another terminal emulator
over st (for example minicom, picocom, cu, ...).
2015-04-15 10:52:44 +02:00
Omar Sandoval
ecac5ee35e Make DECSCUSR thickness configurable 2015-04-10 23:43:05 +02:00