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https://github.com/fish-shell/fish-shell
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02d82dcf85
Adds synopses for those commands missing them. Moves all synopsis sections to code blocks. This improves the appearance, although highlighting as fish code may not be the ideal appearance.
55 lines
1.3 KiB
ReStructuredText
55 lines
1.3 KiB
ReStructuredText
.. _cmd-block:
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block - temporarily block delivery of events
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============================================
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Synopsis
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--------
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::
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block [OPTIONS...]
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Description
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-----------
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``block`` prevents events triggered by ``fish`` or the :ref:`emit <cmd-emit>` command from being delivered and acted upon while the block is in place.
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In functions, ``block`` can be useful while performing work that should not be interrupted by the shell.
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The block can be removed. Any events which triggered while the block was in place will then be delivered.
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Event blocks should not be confused with code blocks, which are created with ``begin``, ``if``, ``while`` or ``for``
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The following parameters are available:
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- ``-l`` or ``--local`` Release the block automatically at the end of the current innermost code block scope
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- ``-g`` or ``--global`` Never automatically release the lock
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- ``-e`` or ``--erase`` Release global block
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Example
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-------
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::
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# Create a function that listens for events
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function --on-event foo foo; echo 'foo fired'; end
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# Block the delivery of events
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block -g
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emit foo
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# No output will be produced
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block -e
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# 'foo fired' will now be printed
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Notes
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-----
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Note that events are only received from the current fish process as there is no way to send events from one fish process to another.
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