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docs: Add word splitting example

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Fabian Homborg 2020-07-06 21:16:55 +02:00
parent 7ea396ab3f
commit 8a6a265c3e
1 changed files with 18 additions and 1 deletions
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doc_src/fish_for_bash_users.rst
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@ -35,7 +35,22 @@ or to erase variables::
PAGER=cat git log
Fish does not perform word splitting. Once a variable has been set to a value, that value stays as it is, so double-quoting variable expansions isn't the necessity it is in bash.
Fish does not perform word splitting. Once a variable has been set to a value, that value stays as it is, so double-quoting variable expansions isn't the necessity it is in bash. [#]_
For instance, here's bash
.. code-block:: sh
> foo="bar baz"
> printf '"%s"\n' $foo # will print two lines, because we didn't double-quote, so the variable is split
"bar"
"baz"
And here is fish::
> set foo "bar baz"
> printf '"%s"\n' $foo # foo was set as one element, so it will be passed as one element, so this is one line
"bar baz"
All variables are "arrays" (we use the term "lists"), and expanding a variable expands to all its elements, with each element as its own argument (like bash's ``"${var[@]}"``::
@ -48,6 +63,8 @@ Specific elements of a list can be selected::
echo $list[5..7]
.. [#] zsh also does not perform word splitting by default (the SH_WORD_SPLIT option controls this)
Wildcards (globs)
-----------------