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docs: clearify global vs universal variable

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shenleban tongying 2023-01-13 09:10:41 -05:00 committed by Fabian Boehm
parent 4ceb497bfb
commit 27952db9f7
2 changed files with 4 additions and 4 deletions
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4
doc_src/cmds/set.rst
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@ -51,8 +51,8 @@ The following scope control variable scope:
**-g** or **--global**
Sets a globally-scoped variable.
Global variables don't disappear and are available to all functions running in the same shell.
They can even be modified.
Global variables are available to all functions running in the same shell.
They can be modified or erased.
These options modify how variables operate:

4
doc_src/language.rst
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@ -944,8 +944,8 @@ Variable Scope
There are four kinds of variables in fish: universal, global, function and local variables.
- Universal variables are shared between all fish sessions a user is running on one computer.
- Global variables are specific to the current fish session, and will never be erased unless explicitly requested by using ``set -e``.
- Universal variables are shared between all fish sessions a user is running on one computer. They are stored in disk and persist even after reboot.
- Global variables are specific to the current fish session. They can be erased by explicitly requesting ``set -e``.
- Function variables are specific to the currently executing function. They are erased ("go out of scope") when the current function ends. Outside of a function, they don't go out of scope.
- Local variables are specific to the current block of commands, and automatically erased when a specific block goes out of scope. A block of commands is a series of commands that begins with one of the commands ``for``, ``while`` , ``if``, ``function``, ``begin`` or ``switch``, and ends with the command ``end``. Outside of a block, this is the same as the function scope.