58 lines
2.0 KiB
Plaintext
58 lines
2.0 KiB
Plaintext
= Buffers
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== Commands
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To open buffers or navigate through the buffers list see
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<<commands#files-and-buffers,`:doc commands files-and-buffers`>>.
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== Scratch Buffers
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Scratch buffers are useful for volatile data and quick prototyping.
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They are not linked to files, so Kakoune does not warn about unsaved
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changes at exit, and the `:write` command requires an explicit filename.
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One particular scratch buffer, named *\*scratch*\*, is automatically
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created when there are no other buffers left in the current
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session. (which is also the case at Kakoune's startup when no files to
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open have been provided)
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A scratch buffer can be created by passing the `-scratch` switch to the
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`:edit` command.
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== Debug Buffers
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Debug buffers are used to gather diagnostics. They are not accessible
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while cycling over the buffers list.
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A specific *\*debug*\* buffer is used by Kakoune to write errors or
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warnings. This is also where the ouput of the `:debug` and the `:echo
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-debug` commands will land.
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A debug buffer can be created by passing the `-debug` switch to the
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`:edit` command.
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== FIFO Buffers
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The `:edit` command can take a `-fifo` switch:
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---------------------------------------------
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:edit -fifo <filename> [-scroll] <buffername>
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---------------------------------------------
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In this case, a buffer named `<buffername>` is created which reads
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its content from the fifo (also called "named pipe") `<filename>`.
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When the fifo is written to, the buffer is automatically updated.
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If the `-scroll` switch is specified, the window displaying the buffer
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will scroll so that the newest data is always visible.
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This is very useful for running some commands asynchronously while
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displaying their result in a buffer. See `rc/make.kak` and `rc/grep.kak`
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for examples.
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When the write end of the fifo is closed, the buffer becomes an ordinary
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<<buffers#scratch-buffers,scratch buffer>>. When the buffer is deleted,
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Kakoune closes the read end of the fifo, so any program writing to it
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will receive `SIGPIPE`. This is useful as it permits to stop the writing
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program when the buffer is deleted.
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