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https://github.com/fish-shell/fish-shell
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38b24c2325
This makes it so we link to the very top of the document instead of a special anchor we manually include. So clicking e.g. :doc:`string <cmds/string>` will link you to cmds/string.html instead of cmds/string.html#cmd-string. I would love to have a way to say "this document from the root of the document path", but that doesn't appear to work, I tried `/cmds/string`. So we'll just have to use cmds/string in normal documents and plain `string` from other commands.
60 lines
1.5 KiB
ReStructuredText
60 lines
1.5 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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.. synopsis::
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block [(--local | --global)]
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block --erase
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Description
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-----------
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``block`` prevents events triggered by ``fish`` or the :doc:`emit <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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Without options, the ``block`` command acts with function scope.
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The following options are available:
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**-l** or **--local**
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Release the block automatically at the end of the current innermost code block scope.
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**-g** or **--global**
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Never automatically release the lock.
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**-e** or **--erase**
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Release global block.
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**-h** or **--help**
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Displays help about using this command.
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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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Events are only received from the current fish process as there is no way to send events from one fish process to another (yet).
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