mirror of
https://github.com/fish-shell/fish-shell
synced 2024-11-14 17:07:44 +00:00
cf9b8fa3fa
This allows us to use :ref: references, which don't require hardcoding it as html [ci skip]
78 lines
3.2 KiB
ReStructuredText
78 lines
3.2 KiB
ReStructuredText
.. _cmd-functions:
|
|
|
|
functions - print or erase functions
|
|
====================================
|
|
|
|
Synopsis
|
|
--------
|
|
|
|
functions [ -a | --all ] [ -n | --names ]
|
|
functions [ -D | --details ] [ -v ] FUNCTION
|
|
functions -c OLDNAME NEWNAME
|
|
functions -d DESCRIPTION FUNCTION
|
|
functions [ -e | -q ] FUNCTIONS...
|
|
|
|
|
|
Description
|
|
-----------
|
|
|
|
``functions`` prints or erases functions.
|
|
|
|
The following options are available:
|
|
|
|
- ``-a`` or ``--all`` lists all functions, even those whose name starts with an underscore.
|
|
|
|
- ``-c OLDNAME NEWNAME`` or ``--copy OLDNAME NEWNAME`` creates a new function named NEWNAME, using the definition of the OLDNAME function.
|
|
|
|
- ``-d DESCRIPTION`` or ``--description=DESCRIPTION`` changes the description of this function.
|
|
|
|
- ``-e`` or ``--erase`` causes the specified functions to be erased.
|
|
|
|
- ``-D`` or ``--details`` reports the path name where each function is defined or could be autoloaded, ``stdin`` if the function was defined interactively or on the command line or by reading stdin, and ``n/a`` if the function isn't available. If the ``--verbose`` option is also specified then five lines are written:
|
|
|
|
-# the pathname as already described,
|
|
-# ``autoloaded``, ``not-autoloaded`` or ``n/a``,
|
|
-# the line number within the file or zero if not applicable,
|
|
-# ``scope-shadowing`` if the function shadows the vars in the calling function (the normal case if it wasn't defined with ``--no-scope-shadowing``), else ``no-scope-shadowing``, or ``n/a`` if the function isn't defined,
|
|
-# the function description minimally escaped so it is a single line or ``n/a`` if the function isn't defined.
|
|
|
|
You should not assume that only five lines will be written since we may add additional information to the output in the future.
|
|
|
|
- ``-n`` or ``--names`` lists the names of all defined functions.
|
|
|
|
- ``-q`` or ``--query`` tests if the specified functions exist.
|
|
|
|
- ``-v`` or ``--verbose`` will make some output more verbose.
|
|
|
|
- ``-H`` or ``--handlers`` will show all event handlers.
|
|
|
|
- ``-t`` or ``--handlers-type TYPE`` will show all event handlers matching the given type
|
|
|
|
The default behavior of ``functions``, when called with no arguments, is to print the names of all defined functions. Unless the ``-a`` option is given, no functions starting with underscores are not included in the output.
|
|
|
|
If any non-option parameters are given, the definition of the specified functions are printed.
|
|
|
|
Automatically loaded functions cannot be removed using ``functions -e``. Either remove the definition file or change the $fish_function_path variable to remove autoloaded functions.
|
|
|
|
Copying a function using ``-c`` copies only the body of the function, and does not attach any event notifications from the original function.
|
|
|
|
Only one function's description can be changed in a single invocation of ``functions -d``.
|
|
|
|
The exit status of ``functions`` is the number of functions specified in the argument list that do not exist, which can be used in concert with the ``-q`` option.
|
|
|
|
|
|
Examples
|
|
--------
|
|
|
|
|
|
::
|
|
|
|
functions -n
|
|
# Displays a list of currently-defined functions
|
|
|
|
functions -c foo bar
|
|
# Copies the 'foo' function to a new function called 'bar'
|
|
|
|
functions -e bar
|
|
# Erases the function ``bar``
|
|
|