FAQ: add some details about the w3m img hack
... and an example patch to switch from double-buffering to a single buffer.
This commit is contained in:
Hiltjo Posthuma
parent
e6e2c6199f
commit
0f8b40652b
1 changed files with 54 additions and 5 deletions
59
FAQ
59
FAQ
|
|
@ -2,12 +2,14 @@
|
|||
|
||||
Use the excellent tool of [utmp](https://git.suckless.org/utmp/) for this task.
|
||||
|
||||
|
||||
## Some _random program_ complains that st is unknown/not recognised/unsupported/whatever!
|
||||
|
||||
It means that st doesn’t have any terminfo entry on your system. Chances are
|
||||
you did not `make install`. If you just want to test it without installing it,
|
||||
you can manually run `tic -sx st.info`.
|
||||
|
||||
|
||||
## Nothing works, and nothing is said about an unknown terminal!
|
||||
|
||||
* Some programs just assume they’re running in xterm i.e. they don’t rely on
|
||||
|
|
@ -15,6 +17,7 @@ you can manually run `tic -sx st.info`.
|
|||
* Some programs don’t complain about the lacking st description and default to
|
||||
another terminal. In that case see the question about terminfo.
|
||||
|
||||
|
||||
## How do I scroll back up?
|
||||
|
||||
* Using a terminal multiplexer.
|
||||
|
|
@ -23,11 +26,13 @@ you can manually run `tic -sx st.info`.
|
|||
* Using the excellent tool of [scroll](https://git.suckless.org/scroll/).
|
||||
* Using the scrollback [patch](https://st.suckless.org/patches/scrollback/).
|
||||
|
||||
|
||||
## I would like to have utmp and/or scroll functionality by default
|
||||
|
||||
You can add the absolute patch of both programs in your config.h
|
||||
file. You only have to modify the value of utmp and scroll variables.
|
||||
|
||||
|
||||
## Why doesn't the Del key work in some programs?
|
||||
|
||||
Taken from the terminfo manpage:
|
||||
|
|
@ -83,12 +88,14 @@ If you are using zsh, then read the zsh FAQ
|
|||
|
||||
Putting these lines into your .zshrc will fix the problems.
|
||||
|
||||
|
||||
## How can I use meta in 8bit mode?
|
||||
|
||||
St supports meta in 8bit mode, but the default terminfo entry doesn't
|
||||
use this capability. If you want it, you have to use the 'st-meta' value
|
||||
in TERM.
|
||||
|
||||
|
||||
## I cannot compile st in OpenBSD
|
||||
|
||||
OpenBSD lacks librt, despite it being mandatory in POSIX
|
||||
|
|
@ -97,6 +104,7 @@ If you want to compile st for OpenBSD you have to remove -lrt from config.mk, an
|
|||
st will compile without any loss of functionality, because all the functions are
|
||||
included in libc on this platform.
|
||||
|
||||
|
||||
## The Backspace Case
|
||||
|
||||
St is emulating the Linux way of handling backspace being delete and delete being
|
||||
|
|
@ -158,19 +166,60 @@ terminal users wants its backspace to be how he feels it:
|
|||
[1] http://www.ibb.net/~anne/keyboard.html
|
||||
[2] http://www.tldp.org/HOWTO/Keyboard-and-Console-HOWTO-5.html
|
||||
|
||||
|
||||
## But I really want the old grumpy behaviour of my terminal
|
||||
|
||||
Apply [1].
|
||||
|
||||
[1] https://st.suckless.org/patches/delkey
|
||||
|
||||
## Why do images not work in st (in programs such as w3m)?
|
||||
|
||||
This is a terrible hack that overdraws an image on top of the terminal emulator
|
||||
window. It also relies on a very specific way the terminal draws it's contents.
|
||||
## Why do images not work in st using the w3m image hack?
|
||||
|
||||
w3mimg uses a hack that draws an image on top of the terminal emulator Drawable
|
||||
window. The hack relies on the terminal to use a single buffer to draw its
|
||||
contents directly.
|
||||
|
||||
st uses double-buffered drawing so the image is quickly replaced and may show a
|
||||
short flicker effect.
|
||||
|
||||
Below is a patch example to change st double-buffering to a single Drawable
|
||||
buffer.
|
||||
|
||||
diff --git a/x.c b/x.c
|
||||
--- a/x.c
|
||||
+++ b/x.c
|
||||
@@ -561,10 +561,6 @@ xresize(int col, int row)
|
||||
win.tw = MAX(1, col * win.cw);
|
||||
win.th = MAX(1, row * win.ch);
|
||||
|
||||
- XFreePixmap(xw.dpy, xw.buf);
|
||||
- xw.buf = XCreatePixmap(xw.dpy, xw.win, win.w, win.h,
|
||||
- DefaultDepth(xw.dpy, xw.scr));
|
||||
- XftDrawChange(xw.draw, xw.buf);
|
||||
xclear(0, 0, win.w, win.h);
|
||||
}
|
||||
|
||||
@@ -921,8 +917,7 @@ xinit(void)
|
||||
gcvalues.graphics_exposures = False;
|
||||
dc.gc = XCreateGC(xw.dpy, parent, GCGraphicsExposures,
|
||||
&gcvalues);
|
||||
- xw.buf = XCreatePixmap(xw.dpy, xw.win, win.w, win.h,
|
||||
- DefaultDepth(xw.dpy, xw.scr));
|
||||
+ xw.buf = xw.win;
|
||||
XSetForeground(xw.dpy, dc.gc, dc.col[defaultbg].pixel);
|
||||
XFillRectangle(xw.dpy, xw.buf, dc.gc, 0, 0, win.w, win.h);
|
||||
|
||||
@@ -1386,8 +1381,6 @@ void
|
||||
draw(void)
|
||||
{
|
||||
drawregion(0, 0, term.col, term.row);
|
||||
- XCopyArea(xw.dpy, xw.buf, xw.win, dc.gc, 0, 0, win.w,
|
||||
- win.h, 0, 0);
|
||||
XSetForeground(xw.dpy, dc.gc,
|
||||
dc.col[IS_SET(MODE_REVERSE)?
|
||||
defaultfg : defaultbg].pixel);
|
||||
|
||||
A more proper (but limited way) would be using sixels. Which st doesn't
|
||||
support.
|
||||
|
||||
## BadLength X error in Xft when trying to render emoji
|
||||
|
||||
|
|
|
|||
Loading…
Reference in a new issue