| Commit message (Collapse) | Author | Age | Files | Lines |
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Thanks to Peter A. Shevtsov!
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invert mode now works as expected. In the config.def.h autohint is set to
false, so the fonts are drawn correctly, without any overlapping.
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right choice.
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The parameters were reordered according to the alphabet too.
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This is a new opportunity to see if X11 somewhen handled colors in a strange
way.
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optimized. There is a speedup when resizing windows.
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sequences, so we have to support escape sequences in escape sequences that
escape sequences in escape sequences – setting a title won't notify you
anymore.
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Taken from vt100 manual programmer:
Control characters (codes \0 to \37 inclusive) are specifically
excluded from the control sequence syntax, but may be embedded
within a control sequence. Embedded control characters are executed
as soon as they are encountered by the VT100. The processing of the
control sequence then continues with the next character received.
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st.c | 68 +++++++++++++++++++++++++++++++++---------------------------------
1 file changed, 34 insertions(+), 34 deletions(-)
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Taken from vt100 programmer manual:
Control characters have values of \000 - \037, and \177. The control
characters recognized by the VT100 are shown in Table 3-10. All
other control codes cause no action to be taken.
We have to take attention when we are using alternate charset, because in
this cases they are not used as control characters.
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st.c | 20 ++++++++++----------
1 file changed, 10 insertions(+), 10 deletions(-)
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charsets.
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If -f options is enabled then tputc() writes all the data to a file. Actual
code assumes that all the strings in 'c' parameters have always 1 byte
length, but this is not always true, because due to utf-8 encoding some
characters can have a diferent length. So it is necessary pass string length
to tputc in order it can call to write() correctly.
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st.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
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allocated structures are wrong. The xclear() is now done on purpose. Please
keep X11 calls out of the way of pure tty-related calls.
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The names of the terminal modes supported by vt102 are (taken from the VT220
programmer reference manual):
Table 4-7 ANSI-Standardized Modes
Name Mnemonic Parameter (Ps)
Error (ignored) - 0 (3/0)
Keyboard action KAM 2 (3/2)
Insert/replace IRM 4 (3/4)
Send/receive SRM 12 (3/1 3/2)
Line feed/new line LNM 20 (3/2 3/0)
Table 4-8 ANSI-Compatible DEC Private Modes
Name Mnemonic Parameter (Ps)
Error (ignored) - 0 (3/0)
Cursor key DECCKM 1 (3/1)
ANSI/VT52 DECANM 2 (3/2)
Column DECCOLM 3 (3/3)
Scroll DECSCLM 4 (3/4)
Screen DECSCNM 5 (3/5)
Origin DECOM 6 (3/6)
Auto wrap DECAWM 7 (3/7)
Auto repeat DECARM 8 (3/8)
Printer form feed DECPFF 18 (3/1 3/8)
Printer extent DECPEX 19 (3/1 3/9)
Text cursor enable DECTCEM 25 (3/2 3/5)
National replacement character sets DECNRCM 42 (3/4 3/2)
This patch adds a comment for each one of these sequences.
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st.c | 26 +++++++++++++++++++++-----
1 file changed, 21 insertions(+), 5 deletions(-)
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LNM sequence is a standard ANSI mode, not a DEC private mode.
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st.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
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This sequence lock/unlock the keyboard ignoring all the key pressing events
from X server.
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st.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
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st.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
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tsetreset() is called when it is necessary a full initialization of the
terminal, so it also should clean the full X window and not only the
terminal content. It is necessary change the order of the
initialization in main(), and put xinit before of tnew(), because tnew()
calls to tsetreset(), and this can cause a call to xreset() with
incorrect values.
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st.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
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Some times the size after a resizing is not an exact multiply of a number of
characters, so redrawn the screen using the lines and columns of the neww
size can cause that some old graphics keep in the screen. Solution is clean
all the windows with the background color.
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st.c | 3 +++
1 file changed, 3 insertions(+)
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st selection don't insert in the selection position whose value is not
set. This is correct for the positions in the end of the line, but cause
some problems in the beginning. For example echo -e 'a\tb' will print in the
screen:
a b
but after selecting and copying in some place you get:
ab
because positions from 1 to 7 don't have any value. This patch deals all
positions without value as blank (even at the end of the line).
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st.c | 17 ++++++++++-------
1 file changed, 10 insertions(+), 7 deletions(-)
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st.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
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malloc and realloc are called through xmalloc and xrealloc, so calloc should
be called through xcalloc.
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st.c | 13 +++++++++++--
1 file changed, 11 insertions(+), 2 deletions(-)
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In previous commits draw was removed from all the X events, but I forgot do
it in resize.
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st.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
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After the commit named "Remove timeout in the main loop", selection is not
working in the proper way. After selecting something, press mouse button in
a line outside of selection causes an incorrect highlight. This patch fix
the problem forcing a draw after the press event, but this is only a fast
hack. Real solution means rewriting selection code.
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st.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
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draw() runs over all lines of the screen and renders only the dirty lines,
this avoids render lines which are not modified since last draw() call. In
this moment the main loop is something like:
- Wait something to read from file descriptors
- Read from pseudo tty
- Call draw() for rending
- Read X events
This cause the problem that all the X events that have to update the screen
have to call draw() (because draw() is called before of X events handling),
so you can have multiples renderings in only one iteration, that will waste
a lot of resources.
This patch change the main loop to:
- Wait something to read from file descriptors
- Read from pseudo tty
- Read X events
- Call draw() for rending
So X events don't have to worry about rendering, because draw() is called
after them.
The only place where draw is called outside of the main loop is in redraw(),
but it is necessary for getting a good tput flash.
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st.c | 29 ++++++-----------------------
1 file changed, 6 insertions(+), 23 deletions(-)
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The main loop waits until there is some data to read in file descriptors of
the X server or the pseudo tty. But it uses a timeout in select(), which
causes that st awake each 20 ms, even it doesn't have something to do. This
patch removes this problem removing the timeout, which is not needed.
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TODO | 1 -
st.c | 27 +++------------------------
2 files changed, 3 insertions(+), 25 deletions(-)
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It is necessary call to XSync if you want a good tput flash, because in
other way you can not be sure that white screen will be shown.
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st.c | 1 +
1 file changed, 1 insertion(+)
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XdbeQueryExtension() tells to the caller if the Xdbe extension is present in
the X server, so it should be called for sanity. But like is said in
XdbeQueryExtension(3):
No other Xdbe functions may be called before this function. If a
client violates this rule, the effects of all subsequent Xdbe calls
that it makes are undefined.
it is mandatory call this function.
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st.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
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Roberto Vargas.
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By default text files are line buffered, and this means that -f option will
not write the line until a \n is printed. This is not very useful for
debugging, so a call to fflush was added. This patch substitute this call
(which will be done by each character painted) by the full remove of the
buffering in the file.
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st.c | 12 +++++-------
1 file changed, 5 insertions(+), 7 deletions(-)
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If malloc or realloc fail they return NULL. Theorically this condition
should be tested in the code, but it's a strange condition today (basically
if this is hapenning thenyou have a big problem), and even Linux never returns
NULL in the default configuration (only if the process don't have room in
the space address, something a bit impossible in the case of st). But stis
enough small for being executed in low resources computers where this can be
a real problem. So the easy way is creating a wrappers function for them and
call to die in case of error.
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st.c | 44 +++++++++++++++++++++++++++++++-------------
1 file changed, 31 insertions(+), 13 deletions(-)
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