libwebp/doc/specs_generation.md
James Zern 40e4ca60ea specs_generation.md: update kramdown command line
coderay was extracted from the core and the options removed in 2.0.0.
See:
49e1b12f52

Change-Id: I5191dcec296ba4bcde5f0bcbc46d1e1135d40ec2
2024-09-06 15:32:26 -07:00

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Markdown

# Generate libwebp Container Spec Docs from Text Source
HTML generation requires [kramdown](https://kramdown.gettalong.org/), easily
installed as a [rubygem](https://rubygems.org/). Rubygems installation should
satisfy dependencies automatically.
HTML generation can then be done from the project root:
```shell
$ kramdown doc/webp-container-spec.txt --template doc/template.html > \
doc/output/webp-container-spec.html
```
kramdown can optionally syntax highlight code blocks, using
[CodeRay](https://github.com/rubychan/coderay), a dependency of kramdown that
rubygems will install automatically. The following will apply inline CSS
styling; an external stylesheet is not needed.
```shell
$ kramdown doc/webp-lossless-bitstream-spec.txt \
--template doc/template.html \
-x syntax-coderay --syntax-highlighter coderay \
--syntax-highlighter-opts "{default_lang: c, line_numbers: , css: style}" \
> doc/output/webp-lossless-bitstream-spec.html
```
Optimally, use kramdown 0.13.7 or newer if syntax highlighting desired.