84 lines
2.2 KiB
Markdown
84 lines
2.2 KiB
Markdown
Hacking on zsh-syntax-highlighting itself
|
|
=========================================
|
|
|
|
This document includes information for people working on z-sy-h itself: on the
|
|
core driver (`zsh-syntax-highlighting.zsh`), on the highlighters in the
|
|
distribution, and on the test suite. It does not target third-party
|
|
highlighter authors (although they may find it an interesting read).
|
|
|
|
The `main` highlighter
|
|
----------------------
|
|
|
|
The following function `pz` is useful when working on the `main` highlighting:
|
|
|
|
```zsh
|
|
pq() {
|
|
(( $#argv )) || return 0
|
|
print -r -l -- ${(qqqq)argv}
|
|
}
|
|
pz() {
|
|
local arg
|
|
for arg; do
|
|
pq ${(z)arg}
|
|
done
|
|
}
|
|
```
|
|
|
|
It prints, for each argument, its token breakdown, similar to how the main
|
|
loop of the `main` highlighter sees it.
|
|
|
|
Testing the `brackets` highlighter
|
|
----------------------------------
|
|
|
|
Since the test harness empties `ZSH_HIGHLIGHT_STYLES` and the `brackets`
|
|
highlighter interrogates `ZSH_HIGHLIGHT_STYLES` to determine how to highlight,
|
|
tests must set the `bracket-level-#` keys themselves. For example:
|
|
|
|
```zsh
|
|
ZSH_HIGHLIGHT_STYLES[bracket-level-1]=
|
|
ZSH_HIGHLIGHT_STYLES[bracket-level-2]=
|
|
|
|
BUFFER='echo ({x})'
|
|
|
|
expected_region_highlight=(
|
|
"6 6 bracket-level-1" # (
|
|
"7 7 bracket-level-2" # {
|
|
"9 9 bracket-level-2" # }
|
|
"10 10 bracket-level-1" # )
|
|
)
|
|
```
|
|
|
|
Testing the `pattern` and `regexp` highlighters
|
|
-----------------------------------------------
|
|
|
|
Because the `pattern` and `regexp` highlighters modifies `region_highlight`
|
|
directly instead of using `_zsh_highlight_add_highlight`, the test harness
|
|
cannot get the `ZSH_HIGHLIGHT_STYLES` keys. Therefore, when writing tests, use
|
|
the style itself as third word (cf. the
|
|
[documentation for `expected_region_highlight`](docs/highlighters.md)). For example:
|
|
|
|
```zsh
|
|
ZSH_HIGHLIGHT_PATTERNS+=('rm -rf *' 'fg=white,bold,bg=red')
|
|
|
|
BUFFER='rm -rf /'
|
|
|
|
expected_region_highlight=(
|
|
"1 8 fg=white,bold,bg=red" # rm -rf /
|
|
)
|
|
```
|
|
|
|
Miscellany
|
|
----------
|
|
|
|
If you work on the driver (`zsh-syntax-highlighting.zsh`), you may find the following zstyle useful:
|
|
|
|
```zsh
|
|
zstyle ':completion:*:*:*:*:globbed-files' ignored-patterns {'*/',}zsh-syntax-highlighting.plugin.zsh
|
|
```
|
|
|
|
IRC channel
|
|
-----------
|
|
|
|
We're on #zsh-syntax-highlighting on freenode.
|
|
|