Have some way of telling whether a page is RTL or LTR

[rayjolt]

When implementing multilingual themes, it would be useful to know the direction of the script the current page uses. For example, in the header.html template in the "hugo-zen-theme-rtl" theme, the following code is used to load styles for right-to-left scripts:

{{ if eq .Lang "ar" }}<link rel="stylesheet" href="/css/rtl.css">{{ end }}

If you want to test for more languages than just Arabic, this quickly becomes unwieldy. Instead, it would be nice to have Hugo define a page variable or similar so that you could do something like this:

{{ if eq .TextDirection "rtl" }}<link rel="stylesheet" href="/css/rtl.css">{{ end }}

You can already do something like this by setting a custom parameter for each language in your config.toml, but it would be better for the process to be automatic. And even if the process can't be automatic, it would be a good idea to have one established way of detecting text direction, so that if people switch themes RTL support will work without any adjustments to settings.

[stale]

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