noname@inventati.org [Tue, 21 Apr 2015 07:48:33 +0000 (09:48 +0200)]
Move common code to xloadcolor
noname@inventati.org [Sun, 19 Apr 2015 20:24:44 +0000 (22:24 +0200)]
Use LEN(dc.col) instead of LEN(colorname).
LEN(colorname) may be below 256 for some configurations.
noname@inventati.org [Sat, 18 Apr 2015 17:33:11 +0000 (19:33 +0200)]
Remove WIN_REDRAW flag.
WIN_REDRAW flag was not used since introduction of Xdbe
in commit
94771d05886fbdd2422e66b7c0256ab27fa375cb
noname@inventati.org [Sat, 18 Apr 2015 23:24:28 +0000 (01:24 +0200)]
Place memset arguments in the correct order.
noname@inventati.org [Sat, 18 Apr 2015 23:24:12 +0000 (01:24 +0200)]
Remove explicit 'return' from 'void' functions.
noname@inventati.org [Sat, 18 Apr 2015 16:45:48 +0000 (18:45 +0200)]
Increment accuaracy in drawtime calculation
This way is a bit more accurate.
noname@inventati.org [Sat, 18 Apr 2015 16:46:17 +0000 (18:46 +0200)]
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.
noname@inventati.org [Sat, 18 Apr 2015 16:45:21 +0000 (18:45 +0200)]
Place tlinelen type on separate line.
Roberto E. Vargas Caballero [Mon, 13 Apr 2015 17:03:53 +0000 (19:03 +0200)]
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, ...).
sin [Wed, 15 Apr 2015 08:43:06 +0000 (09:43 +0100)]
Fix memmove() invocation with src/dst being NULL
This fixes a segmentation fault on some systems.
noname@inventati.org [Tue, 14 Apr 2015 07:53:24 +0000 (09:53 +0200)]
Use as command arguments the remaining parameters
This change allows execute st as 'st mutt' while it keeps the
compability with xterm and urxt.
Roberto E. Vargas Caballero [Tue, 14 Apr 2015 07:47:19 +0000 (09:47 +0200)]
Merge branch 'master' of ssh://suckless.org/gitrepos/st
Markus Wichmann [Sat, 11 Apr 2015 19:21:34 +0000 (21:21 +0200)]
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.
Roberto E. Vargas Caballero [Mon, 13 Apr 2015 20:01:40 +0000 (22:01 +0200)]
Merge branch 'master' of ssh://suckless.org/gitrepos/st
noname@inventati.org [Mon, 13 Apr 2015 12:03:35 +0000 (14:03 +0200)]
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.
noname@inventati.org [Sun, 12 Apr 2015 08:30:19 +0000 (10:30 +0200)]
tresize: remove unnecessary if
noname@inventati.org [Mon, 13 Apr 2015 14:06:21 +0000 (16:06 +0200)]
Remove old TODO entry.
It probably refers to
http://lists.suckless.org/dev/1211/13427.html
and does not seem like a bug in st.
noname@inventati.org [Mon, 13 Apr 2015 14:05:49 +0000 (16:05 +0200)]
Remove 'titles' variable.
We do not free it until exit anyway.
noname@inventati.org [Mon, 13 Apr 2015 12:34:23 +0000 (14:34 +0200)]
Remove useless if in tstrsequence.
noname@inventati.org [Mon, 13 Apr 2015 12:03:51 +0000 (14:03 +0200)]
Simplify tmoveto.
LIMIT returns value. This fact is already used in x2col and y2row.
noname@inventati.org [Mon, 13 Apr 2015 12:03:12 +0000 (14:03 +0200)]
Fix typo.
It seems that LICENSE files are more common than LICENCE files.
At least this patch makes spelling consistent.
noname@inventati.org [Sat, 11 Apr 2015 17:30:36 +0000 (19:30 +0200)]
Remove 'slide' variable in tresize.
noname@inventati.org [Sat, 11 Apr 2015 17:30:12 +0000 (19:30 +0200)]
Move tresize comments around.
noname@inventati.org [Sat, 11 Apr 2015 17:29:52 +0000 (19:29 +0200)]
tresize: move for loop outside if
There is no need to check that slide > 0 before executing loop.
If slide <= 0, loop stops immediately.
noname@inventati.org [Sat, 11 Apr 2015 10:47:16 +0000 (12:47 +0200)]
Simplify loop condition.
noname@inventati.org [Sat, 11 Apr 2015 10:15:51 +0000 (12:15 +0200)]
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.
noname@inventati.org [Sat, 11 Apr 2015 10:18:57 +0000 (12:18 +0200)]
Use do..while in window mapping loop.
Omar Sandoval [Fri, 10 Apr 2015 01:22:31 +0000 (18:22 -0700)]
Make DECSCUSR thickness configurable
noname [Thu, 9 Apr 2015 20:04:43 +0000 (20:04 +0000)]
Use MAX macro where possible.
noname [Wed, 8 Apr 2015 23:24:06 +0000 (23:24 +0000)]
Remove 'xloadfontset' function.
It was used only once and its return value was ignored.
noname [Wed, 8 Apr 2015 23:17:33 +0000 (23:17 +0000)]
Remove keywords from function definitions.
noname [Wed, 8 Apr 2015 23:16:57 +0000 (23:16 +0000)]
Remove variable names from function declarations.
Roberto E. Vargas Caballero [Mon, 6 Apr 2015 08:55:00 +0000 (10:55 +0200)]
Remove redundant control check
control was set, but it was not ever used because it was set
again some lines later.
noname [Sun, 5 Apr 2015 23:58:10 +0000 (23:58 +0000)]
Fixed STR sequence termination condition
ascii code may only be checked for characters that have length equal to
1, not width equal to 1
Roberto E. Vargas Caballero [Fri, 20 Mar 2015 06:46:59 +0000 (06:46 +0000)]
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.
Roberto E. Vargas Caballero [Thu, 19 Mar 2015 08:36:50 +0000 (08:36 +0000)]
Merge remote-tracking branch 'origin/master'
LemonBoy [Wed, 18 Mar 2015 20:12:47 +0000 (21:12 +0100)]
Support the DECSCUSR CSI escape sequence
Christoph Lohmann [Mon, 16 Mar 2015 21:17:30 +0000 (22:17 +0100)]
arg.h wasn't used for dist.
Alex Pilon [Mon, 16 Mar 2015 15:51:23 +0000 (11:51 -0400)]
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>
Roberto E. Vargas Caballero [Sun, 15 Mar 2015 18:07:46 +0000 (18:07 +0000)]
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.
Christoph Lohmann [Sat, 14 Mar 2015 07:53:41 +0000 (08:53 +0100)]
TODO: Fix fontconfig
Christoph Lohmann [Sat, 14 Mar 2015 07:52:37 +0000 (08:52 +0100)]
Add the new selection shortcuts to the manpage.
Christoph Lohmann [Sat, 14 Mar 2015 07:43:57 +0000 (08:43 +0100)]
Glibc wants me to use _DEFAULT_SOURCe. I do obey.
Christoph Lohmann [Sat, 14 Mar 2015 06:41:59 +0000 (07:41 +0100)]
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.
Roberto E. Vargas Caballero [Fri, 13 Mar 2015 07:26:16 +0000 (07:26 +0000)]
Allow combinations with Backspace
XN_ANY_MOD makes that any combination of backspace will return always
DEL. This patch lets to X to decide which value returns.
Alexander Huemer [Tue, 10 Mar 2015 00:23:07 +0000 (01:23 +0100)]
FAQ: fix wording
Ivan Delalande [Wed, 11 Mar 2015 17:13:35 +0000 (17:13 +0000)]
Backspace value shouldn't depend on keypad state
Christoph Lohmann [Tue, 10 Mar 2015 20:59:41 +0000 (21:59 +0100)]
Merge branch 'master' of ssh://suckless.org/gitrepos/st
Christoph Lohmann [Tue, 10 Mar 2015 20:58:32 +0000 (21:58 +0100)]
St now does only set PRIMARY on selection.
http://standards.freedesktop.org/clipboards-spec/clipboards-latest.txt
Alexander Huemer [Tue, 10 Mar 2015 00:23:07 +0000 (01:23 +0100)]
FAQ: fix wording
Christoph Lohmann [Tue, 10 Mar 2015 20:11:04 +0000 (21:11 +0100)]
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.
Christoph Lohmann [Mon, 9 Mar 2015 23:20:28 +0000 (00:20 +0100)]
Change the FAQ for the new Backspace behaviour.
Christoph Lohmann [Mon, 9 Mar 2015 23:00:44 +0000 (00:00 +0100)]
Finally resolving the backspace problem.
The majority now using the Linux behaviour. Minorities have to live in their
ghettos.
Christoph Lohmann [Mon, 9 Mar 2015 22:16:03 +0000 (23:16 +0100)]
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.
Johannes Postma [Thu, 5 Mar 2015 15:52:51 +0000 (15:52 +0000)]
Update kdch1 definition to three octal digits.
ncurses wasn't able to detect the delete-character key as KEY_DC. This
patch fixes that.
kdch1 was defined as "\0177", but terminfo(5) states:
... characters may be given as three octal digits after a \.
The delete-character key is correctly defined in config.def.h.
Roberto E. Vargas Caballero [Sat, 28 Feb 2015 16:13:47 +0000 (16:13 +0000)]
Small improvements to the FAQ
Greg Reagle [Thu, 19 Feb 2015 21:33:22 +0000 (16:33 -0500)]
document keys in man page
Ivan Delalande [Sat, 14 Feb 2015 23:34:03 +0000 (00:34 +0100)]
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.
Roberto E. Vargas Caballero [Sun, 22 Feb 2015 10:59:26 +0000 (10:59 +0000)]
Comment default CC assignment
CC by default is cc, so the assignment was doing nothing, but
it was using non standard syntax, so some system (NetBSD) fail
to compile.
Roberto E. Vargas Caballero [Sun, 22 Feb 2015 10:58:37 +0000 (10:58 +0000)]
Update dates in LICENSE
Nils Reuße [Sun, 15 Feb 2015 16:46:15 +0000 (17:46 +0100)]
Update year in usage()
Nils Reuße [Sun, 15 Feb 2015 16:11:22 +0000 (17:11 +0100)]
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.
Rian Hunter [Thu, 29 Jan 2015 23:00:39 +0000 (15:00 -0800)]
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.
Rian Hunter [Thu, 29 Jan 2015 23:06:43 +0000 (15:06 -0800)]
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().
Ivan Delalande [Fri, 12 Dec 2014 07:39:07 +0000 (08:39 +0100)]
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!
Ivan Delalande [Sun, 16 Nov 2014 08:02:57 +0000 (09:02 +0100)]
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.
sin [Tue, 11 Nov 2014 18:29:11 +0000 (18:29 +0000)]
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.
Eric Pruitt [Wed, 29 Oct 2014 00:51:42 +0000 (17:51 -0700)]
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.
czarkoff@gmail.com [Tue, 28 Oct 2014 11:55:28 +0000 (12:55 +0100)]
Replace character with U+FFFD if wcwidth() is -1
Helpful when new Unicode codepoints are not recognized by libc.
Quentin Rameau [Wed, 15 Oct 2014 22:42:53 +0000 (00:42 +0200)]
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.
Christoph Lohmann [Tue, 21 Oct 2014 14:36:01 +0000 (16:36 +0200)]
Reverting smacs and rmacs to the xterm defaults.
These are needed by ncurses to correctly handle the switch between line
drawing. The changes to the alternative characterset code already fixed the
urwid hack.
Roberto E. Vargas Caballero [Wed, 15 Oct 2014 17:42:20 +0000 (19:42 +0200)]
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.
CustaiCo [Fri, 3 Oct 2014 19:25:21 +0000 (19:25 +0000)]
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
Roberto E. Vargas Caballero [Wed, 8 Oct 2014 09:35:45 +0000 (11:35 +0200)]
Use G1 for alternate charset
St has enacs, which must be printed if a program requires to use
the alternate charset (graphic charset), that in st case was to
select charset graphic for G1, but it was not useful
at all because smacs and rmacs were always redefining the value
of G0.
Roberto E. Vargas Caballero [Wed, 8 Oct 2014 09:33:36 +0000 (11:33 +0200)]
Add LS2 and LS3
These sequences are the equivalents of LS0 and LS1, but for G2 and
G3.
Roberto E. Vargas Caballero [Wed, 8 Oct 2014 08:30:20 +0000 (10:30 +0200)]
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.
Christoph Lohmann [Mon, 29 Sep 2014 13:41:10 +0000 (15:41 +0200)]
Removing an extra space.
Christoph Lohmann [Mon, 29 Sep 2014 13:40:37 +0000 (15:40 +0200)]
Minor style changes for the last patch.
Christoph Lohmann [Mon, 29 Sep 2014 13:38:21 +0000 (15:38 +0200)]
Implementing xzoomreset.
Thanks mvdan@mvdan.cc for proposing this.
Roberto E. Vargas Caballero [Wed, 20 Aug 2014 08:41:41 +0000 (10:41 +0200)]
Add missed names of charset sequences
Roberto E. Vargas Caballero [Thu, 28 Aug 2014 10:48:29 +0000 (12:48 +0200)]
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.
Roberto E. Vargas Caballero [Sun, 24 Aug 2014 14:27:28 +0000 (16:27 +0200)]
Remove indentation level in xdrawcursor
Ben Hendrickson [Fri, 22 Aug 2014 16:25:04 +0000 (09:25 -0700)]
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>
Ivan Delalande [Wed, 20 Aug 2014 19:20:44 +0000 (21:20 +0200)]
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>
Ivan Delalande [Wed, 20 Aug 2014 19:14:08 +0000 (21:14 +0200)]
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>
Alexander Huemer [Wed, 20 Aug 2014 10:05:12 +0000 (12:05 +0200)]
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>
Roberto E. Vargas Caballero [Wed, 20 Aug 2014 07:56:24 +0000 (09:56 +0200)]
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.
Roberto E. Vargas Caballero [Mon, 18 Aug 2014 22:55:02 +0000 (00:55 +0200)]
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.
Roberto E. Vargas Caballero [Mon, 18 Aug 2014 21:23:51 +0000 (23:23 +0200)]
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.
Roberto E. Vargas Caballero [Mon, 18 Aug 2014 21:19:58 +0000 (23:19 +0200)]
Make useful DEL in application mode
DEL key has to generate the sequence ^[P in application mode,
because such sequence means delete current character. It implies
that the character sent in keypad mode must be ^? (DEL character).
Quentin Carbonneaux [Mon, 18 Aug 2014 17:20:41 +0000 (19:20 +0200)]
reset the alt screen in treset
Signed-off-by: Roberto E. Vargas Caballero <k0ga@shike2.com>
Quentin Carbonneaux [Mon, 18 Aug 2014 17:19:42 +0000 (19:19 +0200)]
simplify loop in tresize
Signed-off-by: Roberto E. Vargas Caballero <k0ga@shike2.com>
Alexander Huemer [Sun, 17 Aug 2014 23:52:53 +0000 (01:52 +0200)]
Simplify README
The term 'virtual terminal emulator' was broken. There is nothing
virtual about it, it's a terminal emulator.
Signed-off-by: Alexander Huemer <alexander.huemer@xx.vu>
Signed-off-by: Roberto E. Vargas Caballero <k0ga@shike2.com>
Roberto E. Vargas Caballero [Sun, 17 Aug 2014 18:49:33 +0000 (20:49 +0200)]
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().
Roberto E. Vargas Caballero [Fri, 15 Aug 2014 13:00:48 +0000 (15:00 +0200)]
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.
Roberto E. Vargas Caballero [Fri, 15 Aug 2014 12:48:16 +0000 (14:48 +0200)]
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.
noname [Sun, 27 Apr 2014 22:16:21 +0000 (02:16 +0400)]
Don't set dirty all lines because tswapcreen do it
Signed-off-by: Roberto E. Vargas Caballero <k0ga@shike2.com>
noname [Sun, 27 Apr 2014 22:03:04 +0000 (02:03 +0400)]
tresize return value is not used
Signed-off-by: Roberto E. Vargas Caballero <k0ga@shike2.com>
Roberto E. Vargas Caballero [Thu, 7 Aug 2014 08:19:48 +0000 (10:19 +0200)]
Remove ul capability
This capability indicates that underscore '_' overstrike current
letter under the cursor. It means that you can generate a
underline 'b' using 'b^H_', because it writes a 'b' then backward
one characther and then overstrike '_'. St has not such behaviour,
so it is an error to have this capability.
Roberto E. Vargas Caballero [Thu, 7 Aug 2014 08:11:38 +0000 (10:11 +0200)]
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.