Split up documentation

This breaks apart the massive "index" document into

1. An "index" document that explains how to install and set up fish
and links to the other documents
2. A "fish-language" document that describes the syntax and semantics
of the language
3. A "fish-interactive" document that describes how to use fish
interactively

No change to the content has been made, only the parts have been moved
from index and some of the formatting (links and header levels) were
fixed.

See #7348.
This commit is contained in:
Fabian Homborg
2021-03-03 20:30:35 +01:00
parent 1705bd1440
commit 93eaa61294
4 changed files with 1902 additions and 1881 deletions

1418
doc_src/language.rst Normal file

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