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optimize column width calculation and utf-8 encode for ASCII 

In particular on OpenBSD and on glibc wcwidth() is quite expensive.
On musl there is little difference.
This commit is contained in:
bakkeby 2020-05-20 14:24:44 +02:00
parent 6bf5eb8a38
commit 0c41364e3d
2 changed files with 3 additions and 3 deletions
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4
README.md
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@ -1,4 +1,4 @@
Similar to [dwm-flexipatch](https://github.com/bakkeby/dwm-flexipatch) this st 0.8.3 (53d521, 2020-05-09) project has a different take on st patching. It uses preprocessor directives to decide whether or not to include a patch during build time. Essentially this means that this build, for better or worse, contains both the patched _and_ the original code. The aim being that you can select which patches to include and the build will contain that code and nothing more.
Similar to [dwm-flexipatch](https://github.com/bakkeby/dwm-flexipatch) this st 0.8.3 (aee9f9, 2020-05-09) project has a different take on st patching. It uses preprocessor directives to decide whether or not to include a patch during build time. Essentially this means that this build, for better or worse, contains both the patched _and_ the original code. The aim being that you can select which patches to include and the build will contain that code and nothing more.
For example to include the `alpha` patch then you would only need to flip this setting from 0 to 1 in [patches.h](https://github.com/bakkeby/st-flexipatch/blob/master/patches.def.h):
```c
@ -15,7 +15,7 @@ Refer to [https://st.suckless.org/](https://st.suckless.org/) for details on the
### Changelog:
2020-05-20 - Upgrade to 53d521, 2020-05-09, removed visualbell 1, 2, 3 patches and force redraw after keypress due to incompatibility
2020-05-20 - Upgrade to aee9f9, 2020-05-09, removed visualbell 1, 2, 3 patches and force redraw after keypress due to incompatibility
2020-04-20 - Upgrade to c279f5, 2020-04-19, and added the force redraw on pselect after key is pressed patch and the externalpipein patch

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st.c
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@ -2477,7 +2477,7 @@ tputc(Rune u)
Glyph *gp;
control = ISCONTROL(u);
if (!IS_SET(MODE_UTF8 | MODE_SIXEL)) {
if (u < 127 || !IS_SET(MODE_UTF8 | MODE_SIXEL)) {
c[0] = u;
width = len = 1;
} else {