Commit Graph

844 Commits

Author SHA1 Message Date
Roberto E. Vargas Caballero
7e61f5e4c5 Do not mark as invalid UTF8 control codes
wcwidth() returns -1 for all the non visible characters, but it doesn't
necessarilly mean that they are incorrect. It only means that they are not
printable.
2015-08-18 08:31:51 +02:00
Alex Kozadaev
ee5cad439b Adding mouse colour/shape settings 2015-07-28 12:21:11 +02:00
Christoph Lohmann
dc33d1d66e Adding -T to the usage too. 2015-07-24 18:25:33 +02:00
Christoph Lohmann
b5e29cce52 Add -T, as recommended by Dmitrij D. Czarkoff 2015-07-24 18:24:10 +02:00
Quentin Rameau
4a193b9686 Fix type for write(2) return variable.
A little fix in xwrite().

>From 3727d2e3344b57128ab51c7839795204f1f839ff Mon Sep 17 00:00:00 2001
From: Quentin Rameau <quinq@fifth.space>
Date: Fri, 24 Jul 2015 11:40:46 +0200
Subject: [PATCH] Fix type for write(2) return variable.

The allocated lengh of s fits into an integer so we can safely use
ssize_t here.
2015-07-24 12:01:56 +02:00
Roberto E. Vargas Caballero
62756fdb49 Fix style in execsh 2015-07-24 07:44:34 +02:00
Christoph Lohmann
d032b61597 Make the comment for the IM XFilter more understandable. 2015-07-10 14:31:40 +02:00
Christoph Lohmann
684c72d05e Return style unification. 2015-07-10 14:30:37 +02:00
Christoph Lohmann
b823f57fa0 Aligning the macros. 2015-07-10 14:21:52 +02:00
Christoph Lohmann
684f0a0729 Unix end of file. 2015-07-10 14:19:52 +02:00
Christoph Lohmann
d3c7b6fb73 No inline declarations please. 2015-07-10 14:19:31 +02:00
Christoph Lohmann
41f70a1cff Typo and the missing incr atom from the patches. 2015-07-10 14:17:51 +02:00
Christoph Lohmann
261ea4b7e0 Implement chunked write to the cmdfd.
This is needed so big input like a paste of several megabyte does not clog our
I/O.
2015-07-10 14:15:39 +02:00
Christoph Lohmann
f8c6e7d041 Implement INCR transfers in the clipboard. 2015-07-10 14:10:17 +02:00
FRIGN
f1307d91e2 Don't treat clauses like functions
and add a space between the keyword and the parentheses.

Signed-off-by: Christoph Lohmann <20h@r-36.net>
2015-07-10 13:58:31 +02:00
FRIGN
13233574ed Use BSD-style function notation
Put the opening brace on a new line. This was already used for some
functions inside st.c.

Signed-off-by: Christoph Lohmann <20h@r-36.net>
2015-07-10 13:58:09 +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
FRIGN
abfad4c4fc Remove insane *_FILENO and EXIT_* usage
Any system having different assignments than the usual 0, 1, 2 for
the standard file numbers and 0, 1 for the exit-statuses is broken
beyond repair.
Let's keep it simple and just use the numbers, no reason to fall
out of the window here and bend down for POSIX.
In one occasion, the ret-variable was not necessary. The check was
rewritten.

Signed-off-by: Christoph Lohmann <20h@r-36.net>
2015-07-09 18:34:41 +02:00
Weng Xuetian
5f48e89716 Revert "Remove unnecessary XFilterEvent call."
This reverts commit d2937b05ae.
2015-07-02 11:11:55 +02:00
Quentin Rameau
bdd649a102 do not truncate font size when zooming 2015-06-19 11:49:13 +02:00
Roberto E. Vargas Caballero
71fa10f613 Revert "Optimize memory footprint of line buffers"
This reverts commit 7ab6c92e18.
We need 32 bits for real color support.
2015-06-03 08:07:55 +02:00
Jan Christoph Ebersbach
caa97cc781 Support UTF-8 characters as word delimiters
For a higher usefulness of the utf8strchr function, the index of the
UTF-8 character could be returned in addition with a Rune instead of a
char*.  Since utf8strchr is currently only used by ISDELIM I didn't
bother to increase the complexity.
2015-05-25 08:35:32 +02:00
Roberto E. Vargas Caballero
c03548750b Merge branch 'master' of ssh://suckless.org/gitrepos/st 2015-05-15 07:51:58 +02:00
v4hn
8e15887de9 set selection to IDLE on clear
Otherwise a tangling bmotion event will consider
the selection still valid and selnormalize segfaults
because of an invalid sel.ob.y index.
2015-05-15 07:42:40 +02:00
suigin
89cf0fc597 Small bugfix for makeglyphfontspecs call in drawregion
Here's a patch that fixes a bug when calling `makedrawglyphfontspecs'
in `drawregion'. Wasn't offseting the pointer into the input glyphs
array by `x1'. The bug isn't causing any problems currently, because
`drawregion' is always called with `x1' and `y1' values of 0, but if
this ever changes in the future, the bug would certainly cause some
problems.
2015-05-12 07:37:13 +02:00
Christoph Lohmann
980991fa6e Fix the new -e handling. An empty cmd has to work for backwards compatibility. 2015-05-10 15:19:48 +02:00
suigin
ae1923d275 Clean up xdraws and optimize glyph drawing with non-unit kerning values
I have another patch here for review that optimizes the performance of
glyph drawing, primarily when using non-unit kerning values, and fixes a
few other minor issues. It's dependent on the earlier patch from me that
stores unicode codepoints in a Rune type, typedef'd to uint_least32_t.

This patch is a pretty big change to xdraws so your scrutiny is
appreciated.

First, some performance numbers. I used Yu-Jie Lin termfps.sh shell
script to benchmark before and after, and you can find it in the
attachments. On my Kaveri A10 7850k machine, I get the following
results:

Before Patch
============

1) Font: "Liberation Mono:pixelsize=12:antialias=false:autohint=false"
   cwscale: 1.0, chscale: 1.0
   For 273x83 100 frames.
   Elapsed time :     1.553
   Frames/second:    64.352
   Chars /second: 1,458,159

2) Font: "Inconsolata:pixelsize=14:antialias=true:autohint=true"
   cwscale: 1.001, chscale: 1.001
   For 239x73 100 frames.
   Elapsed time :   159.286
   Frames/second:     0.627
   Chars /second:    10,953

After Patch
===========

3) Font: "Liberation Mono:pixelsize=12:antialias=false:autohint=false"
   cwscale: 1.0, chscale: 1.0
   For 273x83 100 frames.
   Elapsed time :     1.544
   Frames/second:    64.728
   Chars /second: 1,466,690

4) Font: "Inconsolata:pixelsize=14:antialias=true:autohint=true"
   cwscale: 1.001, chscale: 1.001
   For 239x73 100 frames.
   Elapsed time :     1.955
   Frames/second:    51.146
   Chars /second:   892,361

As you can see, while the improvements for fonts with unit-kerning is
marginal, there's a huge ~81x performance increase with the patch when
using kerning values other than 1.0.

So what does the patch do?

The `xdraws' function would render each glyph one at a time if non-unit
kerning values were configured, and this was the primary cause of the
slow down. Xft provides a handful of functions which allow you to render
multiple characters or glyphs at time, each with a unique <x,y> position,
so it was simply a matter of massaging the data into a format that would
allow us to use one of these functions.

I've split `xdraws' up into two functions. In the first pass with
`xmakeglyphfontspecs' it will iterate over all of the glyphs in a given
row and it will build up an array of corresponding XftGlyphFontSpec
records. Much of the old logic for resolving fonts for glyphs using Xft
and fontconfig went into this function.

The second pass is done with `xrenderglyphfontspecs' which contains the
old logic for determining colors, clearing the background, and finally
rendering the array of XftGlyphFontSpec records.

There's a couple of other things that have been improved by this patch.
For instance, the UTF-32 codepoints in the Line's were being re-encoded
back into UTF-8 strings to be passed to `xdraws' which in turn would then
decode back to UTF-32 to verify that the Font contained a matching glyph
for the code point. Next, the UTF-8 string was being passed to
`XftDrawStringUtf8' which internally mallocs a scratch buffer and decodes
back to UTF-32 and does the lookup of the glyphs all over again.

This patch gets rid of all of this redundant round-trip encoding and
decoding of characters to be rendered and only looks up the glyph index
once (per font) during the font resolution phase. So this is probably
what's responsible for the marginal improvements seen when kerning values
are kept to 1.0.

I imagine there are other performance improvements here too, not seen in
the above benchmarks, if the user has lots of non-ASCII code plane characters
on the screen, or several different fonts are being utilized during
screen redraw.

Anyway, if you see any problems, please let me know and I can fix them.
2015-05-07 12:03:44 +02:00
suigin
38af006b5e Changed type for UTF-32 codepoints from long to uint_least32_t 2015-05-06 08:15:41 +02:00
noname
c990abfedf Fix empty selection highlighting bug.
When user clicks LMB, one character is selected, but will not be copied
to selection until the user moves cursor a bit. Therefore, the character
should not be highlighted as selected yet.

Before the patch, the trick was not to mark line as dirty to avoid
highlighting it. However, if user has already selected something and
clicks in line that contains selection, selclear sets the line as dirty
and one character is highlighted when it should not.

This patch replaces dirty trick with explicit check for sel.mode inside
selected().
2015-05-04 12:06:43 +02:00
noname
3cb7f27afe Fix indentation. 2015-05-04 12:00:10 +02:00
noname
1811b6030c Add enumeration for sel.mode
This patch also prevents sel.mode from increasing beyond 2. It is almost
impossible, but sel.mode may overflow if mouse is moved around for too
long while selecting.
2015-05-04 11:57:17 +02:00
noname
22571ea4e8 selnormalize: make special case explicit
Special case is when regular selection spans multiple lines.
Otherwise, just sort sel.ob.x and sel.ob.y.
2015-05-04 11:47:53 +02:00
noname
8751809aff selsnap: simplify SNAP_LINE case
Also make sure y never exceeds term.row-1 even if ATTR_WRAP is set for
some reason.
2015-05-04 11:41:55 +02:00
noname
765bb0fd14 Remove first argument of selsnap. 2015-05-04 11:16:08 +02:00
Jochen Sprickerhof
07ce96a3a0 Fix sigchld
Only wait for termination of the shell.
2015-05-04 10:57:40 +02:00
mvdan@mvdan.cc
190b94c7a2 len assignment is never used
Signed-off-by: Daniel Martí <mvdan@mvdan.cc>
2015-04-27 10:10:30 +02:00
mvdan@mvdan.cc
4f21c41a1c Clarify calculation precedence for '&' and '?'
Signed-off-by: Daniel Martí <mvdan@mvdan.cc>
2015-04-27 10:09:49 +02:00
mvdan@mvdan.cc
3a5053f6c1 Use %u for uint
Signed-off-by: Daniel Martí <mvdan@mvdan.cc>
2015-04-27 10:09:15 +02:00
suigin
7ab6c92e18 Optimize memory footprint of line buffers 2015-04-27 10:05:14 +02:00
noname@inventati.org
0622ad9bad Make tputc, tsetchar and techo accept unicode 2015-04-27 09:50:40 +02:00
noname@inventati.org
21f765426c Change internal character representation. 2015-04-27 09:50:01 +02:00
noname@inventati.org
753fe862b1 Remove last parameter of utf8encode
This parameter was always UTF_SIZ, so it is better remove it and
use directly UTF_SIZ in it.
2015-04-27 08:59:45 +02:00
noname@inventati.org
61c35cd246 Use utf8len instead of utf8decode. 2015-04-27 08:58:37 +02:00
alp@alexpilon.ca
742a41d655 Make build shut up about system() without return value check.
st.c:1321:2: warning: ignoring return value of function declared with warn_unused_result attribute [-Wunused-result]
            system(cmd);
            ^~~~~~ ~~~

Debatable whether an error here should case exit(EXIT_FAILURE). Just
preserving the existing behaviour for now.
2015-04-27 08:57:51 +02:00
Roberto E. Vargas Caballero
f36dd277a2 Merge remote-tracking branch 'origin/master' 2015-04-23 17:59:39 +02:00
Roberto E. Vargas Caballero
0d7448dabc Fix segmentation fault in strhandle()
We cannot pass strescseq.args[0] to atoi when nargs is zero,
because in this case it will be null.
2015-04-23 17:59:10 +02:00
Roberto E. Vargas Caballero
b17aa18f7c Uses a &[] pointer loop instead of + pointer loop 2015-04-23 17:59:10 +02:00
noname@inventati.org
736685d641 Do not set terminal title based on stty arguments. 2015-04-23 17:59:10 +02:00
noname@inventati.org
89807ed453 Move common code to xloadcolor 2015-04-21 09:48:33 +02:00
noname@inventati.org
84c756b97e Use LEN(dc.col) instead of LEN(colorname).
LEN(colorname) may be below 256 for some configurations.
2015-04-21 08:13:46 +02:00
noname@inventati.org
2fdcc5e5f6 Remove WIN_REDRAW flag.
WIN_REDRAW flag was not used since introduction of Xdbe
in commit 94771d0588
2015-04-21 07:49:07 +02:00
noname@inventati.org
ab69ea89b7 Place memset arguments in the correct order. 2015-04-20 09:29:24 +02:00
noname@inventati.org
5528280fae Remove explicit 'return' from 'void' functions. 2015-04-20 09:28:14 +02:00
noname@inventati.org
6dc2b546ec Increment accuaracy in drawtime calculation
This way is a bit more accurate.
2015-04-20 09:20:35 +02:00
noname@inventati.org
c27c731b9f Monotonic clock cannot jump backwards.
The check was introduced back when st used gettimeofday.
The condition is also modified to increment the accuaracy of the
calculation.
2015-04-20 09:18:40 +02:00
noname@inventati.org
6ee56d6590 Place tlinelen type on separate line. 2015-04-20 08:30:49 +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
sin
56abffb4b6 Fix memmove() invocation with src/dst being NULL
This fixes a segmentation fault on some systems.
2015-04-15 10:51:00 +02:00
noname@inventati.org
aff35af275 Use as command arguments the remaining parameters
This change allows execute st as 'st mutt' while it keeps the
compability with xterm and urxt.
2015-04-14 09:55:15 +02:00
Roberto E. Vargas Caballero
83e73c6242 Merge branch 'master' of ssh://suckless.org/gitrepos/st 2015-04-14 09:47:19 +02:00
Markus Wichmann
42fa1f5ce4 Implement most ICCCM rules for selection handling.
ICCCM mandates the use of real timestamps to interact with the
selection, to rule out race conditions if the clients are run at
different speeds. I have implemented the low hanging fruit, putting the
timestamps into text selection. Also, ICCCM mandates a check for whether
XSetSelectionOwner() worked. Not sure my version is correct, though.
2015-04-13 22:18:45 +02:00
Roberto E. Vargas Caballero
23ed12857f Merge branch 'master' of ssh://suckless.org/gitrepos/st 2015-04-13 22:01:40 +02:00
noname@inventati.org
9eb70a2d3e Do not use tmoveto in tputtab.
tmoveto resets CURSOR_WRAPNEXT.

Simple testcase:

for i in $(seq 1 200); do
	printf '\t.';
	usleep 100000;
	printf '\t@';
	usleep 100000;
done

In st executing this script causes @ and . to overwrite each other in
the last column.
2015-04-13 21:33:36 +02:00
noname@inventati.org
9619760e12 tresize: remove unnecessary if 2015-04-13 17:12:49 +02:00
noname@inventati.org
b94ad75e5d Remove 'titles' variable.
We do not free it until exit anyway.
2015-04-13 17:00:08 +02:00
noname@inventati.org
e6dd0f825d Remove useless if in tstrsequence. 2015-04-13 15:17:24 +02:00
noname@inventati.org
b0310fba5d Simplify tmoveto.
LIMIT returns value. This fact is already used in x2col and y2row.
2015-04-13 15:15:47 +02:00
noname@inventati.org
9d1495f9ee Fix typo.
It seems that LICENSE files are more common than LICENCE files.
At least this patch makes spelling consistent.
2015-04-13 14:26:01 +02:00
noname@inventati.org
c569e3146e Remove 'slide' variable in tresize. 2015-04-13 10:18:08 +02:00
noname@inventati.org
39ae1a4de5 Move tresize comments around. 2015-04-13 09:26:03 +02:00
noname@inventati.org
6352502d64 tresize: move for loop outside if
There is no need to check that slide > 0 before executing loop.
If slide <= 0, loop stops immediately.
2015-04-13 09:21:03 +02:00
noname@inventati.org
b9390a5496 Simplify loop condition. 2015-04-13 09:20:00 +02:00
noname@inventati.org
d2937b05ae Remove unnecessary XFilterEvent call.
XFilterEvent usually filters KeyPress events according to input method.
At this point the window is not mapped. The only events that we process
are ConfigureNotify and MapNotify. They should not be filtered by input
method.
2015-04-13 09:17:06 +02:00
noname@inventati.org
d3e0f3444b Use do..while in window mapping loop. 2015-04-13 09:15:42 +02:00
Omar Sandoval
ecac5ee35e Make DECSCUSR thickness configurable 2015-04-10 23:43:05 +02:00
noname
93b54cfcc4 Use MAX macro where possible. 2015-04-10 23:34:06 +02:00
noname
6f5f770186 Remove 'xloadfontset' function.
It was used only once and its return value was ignored.
2015-04-10 23:31:53 +02:00
noname
6524f022f7 Remove keywords from function definitions. 2015-04-10 23:28:21 +02:00
noname
9305f3c184 Remove variable names from function declarations. 2015-04-10 23:28:16 +02:00
Roberto E. Vargas Caballero
5bb90125c8 Remove redundant control check
control was set, but it was not ever used because it was set
again some lines later.
2015-04-06 10:55:00 +02:00
noname
69d1fe06a9 Fixed STR sequence termination condition
ascii code may only be checked for characters that have length equal to
1, not width equal to 1
2015-04-06 10:52:47 +02:00
Roberto E. Vargas Caballero
288f80cb06 Remove strsep() call
strsep() is not a POSIX function, and it means that every system
needs different defines to expose it. If the prototype of strsep
is not exposed then an ugly int/pointer is done and it might mean
a crash. The best solution?, to remove the strsep and make a custom
loop. If C programmers cannot do this kind of loops without calling
a library function, then maybe we should move all the suckless
software to Java.
2015-03-20 07:29:28 +00:00
Roberto E. Vargas Caballero
c9357a8edf Merge remote-tracking branch 'origin/master' 2015-03-19 08:36:50 +00:00
LemonBoy
580302f317 Support the DECSCUSR CSI escape sequence 2015-03-19 05:36:54 +00:00
Alex Pilon
b341e51351 Handle pasting of empty selection.
Otherwise, pasting the X11 primary selection when empty results an
error and Xlib forcibly exits.

Signed-off-by: Christoph Lohmann <20h@r-36.net>
2015-03-16 20:31:15 +01:00
Roberto E. Vargas Caballero
86d1e432a8 Support XA_STRING in notify request
Some programs can only deal with XA_STRING, and it makes impossible st
be able of copying to them. This patch makes st answer also to XA_STRING,
althought it sends utf8 strings. It is not a problem because moderm
applications must support utf8.
2015-03-15 18:07:46 +00:00
Christoph Lohmann
2fcfea1bf1 Add Mod + Shift + c/v and no selclear.
Thanks to Alex Pilon <alp@alexpilon.ca>!

Now there is a distinction between the primary and clipboard selection. With
Mod + Shift + c/v the clipboard is handled. The old Insert behavious does
reside.
2015-03-14 07:41:59 +01:00
Christoph Lohmann
28259f5750 St now does only set PRIMARY on selection.
http://standards.freedesktop.org/clipboards-spec/clipboards-latest.txt
2015-03-10 21:58:32 +01:00
Christoph Lohmann
9494362d0b Fixing the C reading test.
This was a test to see if anyone actually reads what is submitted. The list of
people not contributing will be valuable in the future.
2015-03-10 21:11:04 +01:00
Christoph Lohmann
b0bddc694a Add a hack to handle unknown chars in fontconfig.
The unicode long is added to the cache. So when fontconfig does fall back to
the default font (where there is no easy way to find this out from the
pattern) it isn't reloaded.
2015-03-09 23:16:03 +01:00
Ivan Delalande
1b514048b2 Let curses do the dirty work for flash
Use the terminfo delay syntax ($<x>) in our flash capability to avoid
hardcoding a fixed delay in redraw() when called from tsetmode() with
DECSCNM.
We need to turn on the npc capability so that delays are made with
xon/xoff instead of padding characters.
2015-02-22 11:53:34 +00:00
Nils Reuße
c5f1d74fd8 Update year in usage() 2015-02-15 17:46:15 +01:00
Nils Reuße
7dd24bfb4c Fix crash on font resize resize
if you keep downsizing your fontsize until either xw.ch or xw.cw gets 0,
st crashes, because there is an unchecked division in cresize.
2015-02-15 17:12:36 +01:00
Rian Hunter
aba6c292af Correct shift amount on MODE_INSERT in tputc()
When MODE_INSERT is set we'd shift characters on the same
line forward before inserting our character in tputc().
This did not account for wide characters where width != 1.
This patch makes it so we shift the correct amount.
2015-02-05 20:28:00 +01:00
Rian Hunter
4d14d97547 Fix crash due to wide characters
In tputc(), when a character wasn't large enough to fit
on the current line, we would call tnewline() to place it on
the next line. Unfortunately, we weren't resetting our glyph
pointer and this caused memory corruption when a
wide character (width == 2) was being written. This patch
resets our glyph pointer after calls to tnewline().
2015-02-05 20:28:00 +01:00
Ivan Delalande
708b697ed7 Fix crash due to invalid timespec given to pselect
If blinktimeout is set to a value greater than 1000, pselect will
receive a timeout argument with tv_nsec greater than 1E9 (1 sec), and
fail, making st crash. This patch just ensures that the timespec
structure is correctly filled with a value properly decomposed between
tv_sec and tv_nsec.

Reported by JasonWoof on IRC. Thanks!
2014-12-23 16:20:59 +01:00
Ivan Delalande
09f5d98251 Trim trailing whitespaces in every selection case
Trailing whitespaces are trimmed when copying from normal selection and
rectangular selection on lines that have their last character included
or on the left of the selection. It leads to inconsistent behaviors when
copying the exact same text from the left and right window in
applications with vertical splits.
This patch solves this issue by always trimming the selection.
2014-11-19 18:53:17 +01:00
sin
4418939dd9 Call _exit() instead of exit() if exec*() fails
exit() will also unwind the atexit() functions.  This is bad
because if exec*() fails the process is in an inconsistent state.
2014-11-19 18:52:42 +01:00
Eric Pruitt
bafbba56cd Check for presence of SHELL environment variable
- POSIX states the SHELL environment variable "... shall represent a
  pathname of the user's preferred command language interpreter." As
  such, st should check for its presence when deciding what shell to
  use; just as HOME can be defined to override one's passwd-defined home
  directory, a user should also be able to override their passwd-defined
  shell using the SHELL environment variable.
2014-11-11 19:20:56 +01:00
czarkoff@gmail.com
11625c7166 Replace character with U+FFFD if wcwidth() is -1
Helpful when new Unicode codepoints are not recognized by libc.
2014-11-03 22:52:58 +01:00
Quentin Rameau
008aae541b Avoid failing when embedding with a Window id of 0
I'd like to let st run with its own window when trying to embed it to a window with id 0 instead of exiting with an error.
2014-10-21 18:18:26 +02:00
Roberto E. Vargas Caballero
f9fb620914 Do not set SHELL to utmp ever
SHELL must be set to the SHELL of the user, but it was possible set
it to utmp.
2014-10-15 19:42:20 +02:00
CustaiCo
86633ada91 patch for bell in st
The XBell() call currently used when a bell is recieved sends a message
to the X server, but if the X server doesn't know how to sound it,
it just gets ignored and I have not been able to find anywhere in x.org's
code a way to configure the action that the server does.

However, if you use XkbBell() then you can have a process listening for
the XkbBellNotifyEvent that is produced and either alert you visually or
play an audio file or whatever you want as your notification. You have
to include one more header file but the function seems to be compiled as
part of Xlib, at least on my installation.

CustaiCo
2014-10-13 19:15:52 +02:00
Roberto E. Vargas Caballero
88429cdcbf Add LS2 and LS3
These sequences are the equivalents of LS0 and LS1, but for G2 and
G3.
2014-10-08 11:33:36 +02:00
Roberto E. Vargas Caballero
0c8feecbf7 Fix SI and SO
SI (0x0F or ^O) means Shift In, and it selects G1 charset definition,
and SO (0x0E or ^N) means Shift Out, and it selects G0 charset
definition, but st was doing just the inverse.
2014-10-08 11:28:54 +02:00
Christoph Lohmann
63a07eb19c Minor style changes for the last patch. 2014-09-29 15:40:37 +02:00
Christoph Lohmann
dc8c5c82aa Implementing xzoomreset.
Thanks mvdan@mvdan.cc for proposing this.
2014-09-29 15:38:21 +02:00
Roberto E. Vargas Caballero
c7a945c408 Add missed names of charset sequences 2014-09-23 07:16:58 +02:00
Roberto E. Vargas Caballero
5afb3862ba Add support for utmp in st
St runs an interactive shell and not a login shell, and it means
that profile is not loaded. The default terminal configuration
in some system is not the correct for st, but since profile is
not loaded there is no way of getting a script configures the
correct values.

St doesn't update the utmp files, this is the job of another
suckless tool, utmp. Utmp also opens a login shell (it is the
logical behaviour when you create a new user record) it is a
good option execute utmp and then get a correct input in
utmp, wtmp and lastlog file, and execute the content of the
profile.
2014-09-23 07:12:41 +02:00
Roberto E. Vargas Caballero
0392d165d0 Remove indentation level in xdrawcursor 2014-09-09 05:51:36 +02:00
Ben Hendrickson
98a1085d0e Removing wrapping newlines from selection
When getting selected text, lines that were wrapped because of length
ought not include the wrapping newline in the selection.

This comes up, for example, when copying a bash command that is long
enough to wrap from the console and pasting it back into the console.
The extra newline breaks it.

Similiarly, changes behavior when trimming whitespace from the end of a
physical line to only do so if the line does not wrap. Otherwise we are
trimming whitespace from the middle of a logical line, which may change
its meaning.

Signed-off-by: Roberto E. Vargas Caballero <k0ga@shike2.com>
2014-08-23 09:52:18 +02:00
Ivan Delalande
51466e019a Change the behavior of word snapping on delimiters
This makes any sequence of identical delimiters be considered a single
word in word-snapping mode. This seems more coherent for this mode and
is similar to what xterm does.

Signed-off-by: Roberto E. Vargas Caballero <k0ga@shike2.com>
2014-08-21 17:50:31 +02:00
Ivan Delalande
c490a60b80 Move calls to selsnap into selnormalize
This simplifies getbuttoninfo() and bpress(), and fixes a bug which made word
snapping behave incorrectly when a delimiter was at the beginning or end of
line.

Signed-off-by: Roberto E. Vargas Caballero <k0ga@shike2.com>
2014-08-21 17:50:31 +02:00
Alexander Huemer
83dea7fd7b Improve readability of enum members
The 'left shift from one' notation of power of two integers is more
expressive than the result.

Signed-off-by: Alexander Huemer <alexander.huemer@xx.vu>
Signed-off-by: Roberto E. Vargas Caballero <k0ga@shike2.com>
2014-08-20 21:52:33 +02:00
Roberto E. Vargas Caballero
e5f6736ee0 Add eschandle()
We already have a csihandle() function, where is located code about
CSI sequences, so it is logical do the same with ESC sequences.
This change helps to simplify tcontrol(), which has a complex flow
and should be rewritten.
2014-08-20 21:52:33 +02:00
Roberto E. Vargas Caballero
a3549c2eec Improve execsh() and don't allow anonymous shells
This patch improves the shell selection on execsh and forbid
shell with users don't registered in the passwd file.
2014-08-20 09:03:44 +02:00
Roberto E. Vargas Caballero
8342036f98 Fix definition of CONTROLC0
DEL character is not thecnically talking a C0 control character,
although it has some common properties with them, so it is useful
for us consider it as C0. Before this patch DEL (\177), was not
ignored as it ought to be.
2014-08-19 12:57:44 +02:00
Quentin Carbonneaux
177d888dff reset the alt screen in treset
Signed-off-by: Roberto E. Vargas Caballero <k0ga@shike2.com>
2014-08-19 12:57:43 +02:00
Quentin Carbonneaux
fa04911c91 simplify loop in tresize
Signed-off-by: Roberto E. Vargas Caballero <k0ga@shike2.com>
2014-08-19 12:57:43 +02:00
Roberto E. Vargas Caballero
8f3e6a577d Fix man page and usage()
Man page was repeating -f option, the second time instead of -i,
and this option was lost in usage() message. This patch also indent
the output of usage().
2014-08-17 20:49:33 +02:00
Roberto E. Vargas Caballero
f8b4998b32 Convert VT102ID to a config variable
VT102ID is the sequence that the terminal returns when it is inquired
to identify itself. This value should be configurable in the same
way that another st parameters.
2014-08-15 15:00:48 +02:00
Roberto E. Vargas Caballero
6530025bca Fix portability problem in techo()
ISCONTROL chechks if a value is between 0 and 0x1f or
between 0x80 and 0x9f. Char signess depends of architecture
and compiler, so in some environment the second case is
always false (and wrong), Techo() calls ISCONTROL with a
char variable, whose type cannot be changed because tpuc()
expects a pointer to char, so the solution is to insert a
cast in the call to ISCONTROL.
2014-08-15 14:48:16 +02:00
noname
d4a17316d3 Don't set dirty all lines because tswapcreen do it
Signed-off-by: Roberto E. Vargas Caballero <k0ga@shike2.com>
2014-08-10 22:22:42 +02:00
noname
20c4f12254 tresize return value is not used
Signed-off-by: Roberto E. Vargas Caballero <k0ga@shike2.com>
2014-08-10 22:16:21 +02:00
Roberto E. Vargas Caballero
8de8ae3923 Unset mode when clearing regions
tclearregion() was clearing regions using spaces and the current
attributes of the terminal. It was correct with all the modes excepct
underline, because they didn't affect the space character, but in
the case of underline it was a problem. A easy way of seeing this
problem is writing this in the last line of the terminal:

	tput smul ; echo first; tput rmul; echo second; echo third

Fist was underlined, and second and third were not underlined, but
the spaces at the right of second was underlined becuause in the
previous scrool underline mode was set.
2014-08-07 10:11:38 +02:00
Roberto E. Vargas Caballero
ec3268961d Add error message when child exits whit error
Master proccess was not showing any error message when the child
died with an error, and it was very confusing for the user (for
example with incorrect -e command).
2014-08-04 22:07:04 +02:00
Roberto E. Vargas Caballero
769d481807 Remove difference between fast and slow blinking
One blinking mode is good enough, and two is too much. The best aproach
is emulate the fast blinking with the slow blinking, that it is more
used.
It is removed the flag ATTR_FASTBLINK because it has not a different
meaning of ATTR_BLINK, so it is not needed.

Signed-off-by: Roberto E. Vargas Caballero <k0ga@shike2.com>
2014-07-31 19:40:37 +02:00
Michael Forney
b4dfa18124 Fix disabling of bold and fastblink
According to ECMA-48¹ 8.3.117, an attribute value of 21 is "doubly
underlined", while 22 is "normal colour or normal intensity (neither
bold nor faint)".

Additionally, 25 is "steady (not blinking)", which likely means neither
slow blink nor fast blink.

¹: http://www.ecma-international.org/publications/files/ECMA-ST/Ecma-048.pdf

Signed-off-by: Roberto E. Vargas Caballero <k0ga@shike2.com>
2014-07-26 10:13:11 +02:00
Weng Xuetian
84ceefe089 Fix st with input method.
XFilterEvent need to be called against every event, otherwise it would
missing some message in the xim protocol and misbehave on some im server.

Signed-off-by: Roberto E. Vargas Caballero <k0ga@shike2.com>
2014-07-19 19:46:31 +02:00
Eric Pruitt
b5d0a13c10 Changed inconsistent indent
- A line was indented using spaces despite the rest of the code using
  tabs.

Signed-off-by: Roberto E. Vargas Caballero <k0ga@shike2.com>
2014-07-15 19:30:48 +02:00
Roberto E. Vargas Caballero
984c12d2a6 Add 8 bit version of DCS, APC, PM, OSC
DCS, APC, PM, OSC version for 7 bits environments already was implemented
in st.  This patch adds the 8 bit version of it.
2014-07-08 23:32:28 +02:00
Roberto E. Vargas Caballero
da78629cf5 Add 8 bit version of HTS
HTS version for 7 bits environments already was implemented in st.
This patch adds the 8 bit version of it.
2014-07-08 23:32:28 +02:00
Roberto E. Vargas Caballero
f5356d0185 Add 8 bit version of NEL
NEL version for 7 bits environments already was implemented in st.
This patch adds the 8 bit version of it.
2014-07-08 23:32:25 +02:00
Roberto E. Vargas Caballero
bcbaf5d9be Add 8 bit version of DECID
DECID version for 7 bits environments already was implemented in st.
This patch adds the 8 bit version of it.
2014-07-08 23:28:10 +02:00
Anders Eurenius
f796533b1b Render faint attribute
Faint text is implemented by allocating a new color at one-half
intensity of each of the r, g, b components, or if the text bold at the
same time, it is not made lighter.

Signed-off-by: Roberto E. Vargas Caballero <k0ga@shike2.com>
Signed-off-by: Christoph Lohmann <20h@r-36.net>
2014-07-08 22:46:55 +02:00
Ivan Delalande
955923b38b Remove all strcmp and strlen calls on Glyph.c[]
There were a few occurrences of strcmp and strlen being called on Glyph.c[],
which is not always null-terminated (this actually depends on the last values in
the buffer s in ttyread()). This patch replace all the calls to strcmp with a
test on c[0] directly or a call to tlinelen, and the one to strlen with utf8len.
I also took the opportunity to refactor getsel and tdumpline.

Signed-off-by: Roberto E. Vargas Caballero <k0ga@shike2.com>
2014-07-08 09:21:48 +02:00
Anders Eurenius
1fc4afd1e6 Render struck-out attribute
Implement crossed-out text with an XftDrawRect call, similar to how
underline is implemented. The line is drawn at 2/3 of the font ascent,
which seems to work nicely in practice.

Signed-off-by: Roberto E. Vargas Caballero <k0ga@shike2.com>
2014-06-27 14:07:22 +02:00
Anders Eurenius
21bd4f4f9d Render invisible attribute
Implement invisible mode by setting the foreground color to be the same
as the background color. Not rendering anything would also be an
alternative, but this seems less likely to cause surprises in
conjunction with any hacks.

Signed-off-by: Roberto E. Vargas Caballero <k0ga@shike2.com>
2014-06-27 14:06:21 +02:00
Anders Eurenius
50e6355e0d Reorder and extend glyph attributes
Faint, invisible, struck and fast blink are added as glyph attributes.
Since there's an edit here, let's take the opportunity to reorder them
so that they correspond to the two's power of the corresponding escape
code. (just for neatness, let's hope that property never gets used for
anything.)

Signed-off-by: Roberto E. Vargas Caballero <k0ga@shike2.com>
2014-06-27 14:04:47 +02:00
Roberto E. Vargas Caballero
77569526c0 Remove CEIL macro
This macro was not correct in some cases, and it was used only in
one place, where we did'nt get any benefit in performance of in size,
so the macro is removed and ceilf is used instead of it. The only
function needed from math.h is ceilf, so this patch defines the
prototype of it instead of including math.h.
2014-06-26 12:37:06 +02:00
Ivan Delalande
19d095717f Fixed wrong nanosecond factor 10E6.
Commit 5edeec1 introduced a wrong factor for nanosecond computation, the correct
value is 1E6. Time and timeout values are 10 times less than they should be and
this cause high CPU usage.

Reported by pyroh on IRC. Thanks!

Signed-off-by: Roberto E. Vargas Caballero <k0ga@shike2.com>
2014-06-26 12:33:55 +02:00
FRIGN
5edeec1b20 Use monotonic clock to prevent timing issues
This patch replaces the gettimeofday()/timeval-system with
uses of clock_gettime() with a monolithic clock and timespec-structs.
gettimeofday() is not accurate and prone to jumps and POSIX.1-2008
marks it as obsolete. Read more here [0].

The patch should speak for itself and decreases the binary
size for me by almost 200K(!).

[0]: http://blog.habets.pp.se/2010/09/gettimeofday-should-never-be-used-to-measure-time

Signed-off-by: Roberto E. Vargas Caballero <k0ga@shike2.com>
2014-06-24 21:45:36 +02:00
Troy Sankey
58eaa998b3 update size hints on zoom
On font zooming (i.e. xzoom()), window size hints are not updated.  This
patch does that.

Signed-off-by: Roberto E. Vargas Caballero <k0ga@shike2.com>
2014-06-21 10:03:41 +02:00
Silvan Jegen
c2fd2754eb Refactor the innermost loop of the xdraws function
Signed-off-by: Silvan Jegen <s.jegen@gmail.com>
Signed-off-by: Christoph Lohmann <20h@r-36.net>
2014-06-15 12:12:23 +02:00
Christoph Lohmann
587b443592 Style police. 2014-06-07 13:49:04 +02:00
Roberto E. Vargas Caballero
93661042a2 Simplify tdeftrans 2014-06-07 13:23:45 +02:00
FRIGN
18a05fdf43 Remove unnecessary typedef
This should also fix compiling-errors on OpenBSD,
as reported by Nils R. Thanks!

Signed-off-by: Roberto E. Vargas Caballero <k0ga@shike2.com>
2014-06-06 15:23:22 +02:00
Colona
5159d55c63 Refactor selsnap SNAP_WORD.
Refactor the SNAP_WORD part in selsnap, and fix a bug that caused the word
delimiters to be ignored if it was at the very beginning or end of a wrapped
line.

Signed-off-by: Roberto E. Vargas Caballero <k0ga@shike2.com>
2014-06-05 21:14:45 +02:00
Colona
6fd887077e Fix rectangular selection.
selsort computes the wrong normalized coordinates when rectangular
selection is enabled, causing rectangular selection to only work
when going toward either the top left corner, or the bottom right
one.

Signed-off-by: Roberto E. Vargas Caballero <k0ga@shike2.com>
2014-06-04 21:10:25 +02:00
Hiltjo Posthuma
bb6dc33206 tiny cleanup
Signed-off-by: Roberto E. Vargas Caballero <k0ga@shike2.com>
2014-06-04 21:09:07 +02:00
Colona
2323e962e6 Make selection consistent over line breaks.
Currently, selection is expanded to the end of the line over line breaks only in
regular selection mode, when the line in not empty and when going down and/or
right. This covers all the cases including word selection mode, with the
exception of rectangular selection because it would make this mode too rigid.
This adjustment is made in selsort so I renamed it to selnormalize to better
reflect what it does now.

Signed-off-by: Roberto E. Vargas Caballero <k0ga@shike2.com>
2014-06-04 21:09:07 +02:00
Christoph Lohmann
c6fcb78b3a Fixing color and refactor xsetcolorname.
By  the recommendation of FRIGN I refactored xsetcolorname to remove the
unnecessary r, g, b variables when allocating a new  color.  Colors  are
now freed and set to the new color. A die() should not happen here. Oth‐
erwise it is easy for applications to kill st. St should be resilent  to
malicious input.

Second  this  patch  standardises  the  naming  of  »color«. There is no
»colour« here. Maybe in some parts of the world.
2014-06-01 17:08:16 +02:00
Christoph Lohmann
8b4cfcea73 Revert "Refactor xsetcolorname()"
This reverts commit a32c5f5726.
2014-06-01 16:52:19 +02:00
FRIGN
a32c5f5726 Refactor xsetcolorname()
I mainly improved the slightly off algorithm used to load colours in the 256-colour-space and
removed unnecessary local values (r,g,b,colour).
"colour" is not necessary as a punchbag for XftColorAlloc[Value,Name], as they don't mess with
the result-adress until they are absolutely sure everything worked out[0].

Being at it, I changed the error-returns for AllocValue to dies (just like in xloadcols()), as
a failure is most likely an OOM-situation you better catch early.
In case of an invalid name everything stays the same.

[0]: http://www.opensource.apple.com/source/X11libs/X11libs-40/libXft/libXft-2.1.13/src/xftcolor.c

Signed-off-by: Christoph Lohmann <20h@r-36.net>
2014-06-01 16:20:22 +02:00
Balazs Kezes
ba36d1394b Don't report release events for mouse wheel
Signed-off-by: Christoph Lohmann <20h@r-36.net>
2014-06-01 15:57:03 +02:00
Christoph Lohmann
ede83bd08b Fixing italic bold.
Thanks Felipe Spychalski <spychalski@gmail.com> for the patch!
2014-06-01 15:54:28 +02:00
Alexander
2411308bd2 Fixed copying empty lines inside selection.
The code was assuming that empty lines have implicit wrap-around attribute.

Signed-off-by: Roberto E. Vargas Caballero <k0ga@shike2.com>
2014-05-27 08:37:12 +02:00
Christoph Lohmann
f4ebb3180f Fixing trailing whitespaces. 2014-05-24 13:48:44 +02:00
FRIGN
3544e354b2 Fix colour-model and simplify xloadcols()
Signed-off-by: Christoph Lohmann <20h@r-36.net>
2014-05-24 13:47:00 +02:00
Hiltjo Posthuma
cf890e5bf0 Allow mouse selection override using ShiftMask
Similar to xterm or urxvt holding shift before selecting text with the mouse
allows to override copying text. For example in tmux with "mode-mouse on" or
vim (compiled with --with-x), mc, htop, etc.

forceselmod in config.h sets the modifier to use this mode, by default
ShiftMask.

Signed-off-by: Hiltjo Posthuma <hiltjo@codemadness.org>
2014-05-14 07:48:25 +02:00
Christoph Lohmann
bdb850a16a Redraw needs all dirty lines to have flash etc. work. 2014-05-09 17:12:58 +02:00
Colona
e31829f659 End a sequence only on CAN, SUB, \a and C1s. 2014-05-09 10:25:29 +02:00
Colona
5e917ab287 Also clears ESC_START on interrupt characters during sequences.
Otherwise, the rest of the input is interpreted as a new escape
sequence.
For the ESC character, ESC_START is re-set in tcontrolcode.
2014-05-09 08:26:37 +02:00
noname
99fb365aa3 Consistent FALLTHROUGH comments. 2014-05-02 21:49:52 +02:00
Roberto E. Vargas Caballero
870f961c49 Fix displaying control code
Control code are never displayed. It is not important if graphic
charset is displayed or not.
2014-04-30 08:35:53 +02:00
Roberto E. Vargas Caballero
1629363f2d Remove ATTR_GFX and tselcs
ATTR_GFX was used long time ago to detect when terminal was in
graphic mode. Today graphic mode is implemented using a charset
pointer, so ATTR_GFX is not needed anymore because graphic
condition can be detected directly checking if current charset
is GRAPHICS C0.
2014-04-29 15:17:51 +02:00
noname
6b315558f8 Do not save cursor in tresize.
This patch fixes the bug introduced in
8f11e1cd03

To reproduce the bug:
1. Save cursor: printf '\e[s'
2. Load cursor: printf '\e[u'
3. Resize st window.
4. Load cursor again: printf '\e[u'
2014-04-29 15:17:50 +02:00
noname
5f91983541 Simplify selected(). 2014-04-28 18:49:45 +02:00
noname
0e439e5624 Simplify xunloadfonts. 2014-04-28 18:48:09 +02:00
noname
74962bf566 Remove one indentation level in getsel(). 2014-04-28 18:38:07 +02:00
noname
6681af165b Remove unused dump() function. 2014-04-28 18:38:07 +02:00
noname
1ae2745fd1 Add missing function prototypes. 2014-04-28 18:38:06 +02:00
noname
a48f2be7f5 Use MODBIT in xseturgency. 2014-04-28 18:38:06 +02:00
noname
17fa1493ee Compute ena_sel as one expression. 2014-04-28 18:38:06 +02:00
Roberto E. Vargas Caballero
a8a9e66a7d Simplify expressions in tputc() 2014-04-28 18:38:05 +02:00
Roberto E. Vargas Caballero
17290f493b Fix misplaced break
This misplaced break was causing an incorrect fall through
from DSR to DECSTBM.
2014-04-28 18:38:05 +02:00
Roberto E. Vargas Caballero
43d74ef362 Create a function for DEC test
Almost of the sequences execute their action in a separate function,
which is good because helps to read the full set of sequences
faster.
2014-04-28 18:38:05 +02:00
Roberto E. Vargas Caballero
3764f38fc8 Fix tputc control code handling
The patch 53105cf modified how control codes were detected, because
it tried to handle also C1 control codes (0x80-0x9f), that have
upper bit to 1, so they are multi byte character in utf8.
Code was checking the value of width in order to known that after
decoding the unicode point had a width of 1 byte, but it as incorrect
because this width is the columnb width.
2014-04-28 18:32:09 +02:00
Roberto E. Vargas Caballero
53105cf74f Remove repeated initialisation of term.esc
Once a sequence is completed term.esc must return to 0, so
instead of repeating this expression in all the cases is
better put it at the end of the block.
2014-04-27 11:30:21 +02:00
Roberto E. Vargas Caballero
aa35bbd7a1 Cancel DCS with SUB, CAN, ESC or any CC1 code
From http://www.vt100.net/docs/vt510-rm/chapter4:

	*The VT510 ignores all following characters until it receives a
	 SUB, ST, or any other C1 control character.

So OSC, PM and APC sequence ends with a SUB (it cancels the sequence
and show a question mark as error), ST or any another C1 (8 bits)
code, or their C0 (7 bits) equivalent sequences (at this moment we
do not handle C1 codes, but we should). But it is also said that:

	Cancel  CAN
	1/8     Immediately cancels an escape sequence, control sequence,
		or device control string in progress. In this case, the
		VT510 does not display any error character.

	Escape  ESC
	1/11    Introduces an escape sequence. ESC also cancels any escape
		sequence, control sequence, or device control string in
		progress.
2014-04-27 11:30:13 +02:00
Markus Teich
704d12442e add break;s for last cases in switch statements 2014-04-27 10:34:57 +02:00
noname
02d2df5790 Do not eat ESC character if control string is not properly terminated.
Currently tputc handles the case of too long control string waiting for
the end of control string.

Another case is when there is ESC character is encountered but is not
followed by '\\'.  In this case st stops processing control string,
but ESC character is ignored.

After this patch st processes ESC characters in control strings properly.

Test case:
printf '\e]0;abc\e[1mBOLD\e[0m'

Also ^[\ is actually processed in the code that handles ST.
According to ECMA-048 ST stands for STRING TERMINATOR and is used to
close control strings.
2014-04-26 00:14:42 +02:00
noname
c4b79b055d Fix for multibyte characters in techo.
Works for both signed and unsigned char.
2014-04-26 00:03:09 +02:00
noname
7f1e02e4db s/DSC/DCS/ DCS stands for DEVICE CONTROL STRING 2014-04-26 00:03:09 +02:00
noname
84f6dbffa5 Use xwrite instead of write. 2014-04-26 00:03:08 +02:00
noname
2d67f99d28 Remove unnecessary break 2014-04-26 00:03:08 +02:00
noname
4a8574b439 Comment fix. 2014-04-25 23:57:44 +02:00
Colona
8f11e1cd03 On terminal resize, clear the alt screen with its own cursor.
Currently the alternate screen get messed up on resize if it has
different colors or mode.
2014-04-25 23:57:44 +02:00
noname
844c503c80 Optimize tputtab.
Before this patch executing
	printf '\e[10000000000I'
or
	printf '\e[10000000000Z'
resulted in long delay.
2014-04-25 23:57:44 +02:00
noname
1b0b9759dc Use != instead of ^ for logical values.
sel.alt is only changed by
	sel.alt = IS_SET(MODE_ALTSCREEN);
2014-04-25 23:57:43 +02:00
noname
99d2d6007a Use BETWEEN macro in xsetcolorname and fix style. 2014-04-25 23:57:43 +02:00
Christoph Lohmann
fe31a3f634 Conformity in the -g geometry handling.
Thanks to Yuri Karaban for suggesting this!

These changes make -g correspond to <cols>x<rows> and honor it so non-tiling
window managers can work with the size hints afterwards. It also adds a -i
flag to force the window size. This is needed so -g keeps being useful in dwm.
2014-04-25 22:34:24 +02:00
Roberto E. Vargas Caballero
6b7f63bac5 Simplify a bit more tdeletechar and tinsertblank
The large and repeated expression used in memmove to indirect
the line can be simplified using a pointer, that makes more
clear where begins and where ends the movement.
2014-04-25 17:25:59 +02:00
noname
80b32af794 Simplify tdeletechar and tinsertblank and fix memory corruption.
Current CSI parsing code uses strtol to parse arguments and allows them
to be negative. Negative argument is not properly handled in tdeletechar
and tinsertblank and results in memory corruption in memmove.

Reproduce with printf '\e[-500@'

Patch also removes special handling for corner case and simplifies
the code.

Removed
	term.dirty[term.c.y] = 1
because tclearregion sets dirty flag.
2014-04-25 17:17:48 +02:00
noname
16ac85bf54 Style fixes in tscrollup. 2014-04-23 20:38:04 +02:00
noname
fe527aa508 Do not set dirty flag twice in tscrollup and tscrolldown. 2014-04-23 20:37:59 +02:00
noname
3afdb4ff04 Use tsetdirt in tscrollup and tscrolldown.
tscrollup and tscrolldown do not use tsetdirt, but their code is
equivalent to

        tsetdirt(orig, term.bot-n);
        tsetdirt(orig+n, term.bot);

tclearregion also marks cleared lines as dirty.
In tscrolldown it sets lines from term.bot-n+1 to term.bot dirty, and in
tscrollup it sets lines from orig to orig+n-1 dirty.

In both functions all lines from orig to term.bot are effectively set
dirty, but in tscrolldown lines from orig+n to term.bot are set dirty
twice, and in tscrollup lines from orig to term.bot-n are set dirty
twice.

These patches make it clear which lines are set dirty and sets them
dirty once in each funciton.
2014-04-23 20:35:16 +02:00
noname
f9dc374ea0 Fix techo handling of control and multibyte characters.
techo compares signed char to '\x20'. Any character with code less then
'\x20' is treated as control character.  This way characters with MSB
set to 1 are considered control characters too.

Also this patch makes techo display DEL character as ^?.

To reprocuce the bug, enable echo mode using printf '\e[12l',
then type DEL character or any non-ASCII character.
2014-04-23 20:31:45 +02:00
noname
fa19f241a3 Make xrealloc and xstrdup style consistent. 2014-04-23 15:39:04 +02:00
noname
df1810dd8f Use BETWEEN in tsetchar. 2014-04-23 15:39:03 +02:00