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note in the tutorial the vars that are auto split

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Users continue to be surprised that fish auto splits/joins three env
vars but not other similar vars. Mention this in the tutorial to make it
less likely new users are surprised by this behavior.

Fixes #4009
This commit is contained in:
Kurtis Rader 2017-05-25 21:11:51 -07:00 committed by Fabian Homborg
parent 4afd41877f
commit 6f6d3ce520
1 changed files with 2 additions and 0 deletions
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doc_src/tutorial.hdr
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@ -300,6 +300,8 @@ Other variables, like `$PATH`, really do have multiple values. During variable e
<outp>/usr/bin /bin /usr/sbin /sbin /usr/local/bin</outp> <outp>/usr/bin /bin /usr/sbin /sbin /usr/local/bin</outp>
\endfish \endfish
Note that there are three environment variables that are automatically split on colons to become lists when fish starts running: `PATH`, `CDPATH`, `MANPATH`. Conversely, they are joined on colons when exported to subcommands. All other environment variables (e.g., `LD_LIBRARY_PATH`) which have similar semantics are treated as simple strings.
Lists cannot contain other lists: there is no recursion. A variable is a list of strings, full stop. Lists cannot contain other lists: there is no recursion. A variable is a list of strings, full stop.
Get the length of a list with `count`: Get the length of a list with `count`: