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https://github.com/fish-shell/fish-shell
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44 lines
1.5 KiB
ReStructuredText
44 lines
1.5 KiB
ReStructuredText
string-join - join strings with delimiter
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=========================================
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Synopsis
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--------
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.. BEGIN SYNOPSIS
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| ``string`` join [**-q** | **--quiet**] SEP [*STRING*...]
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| ``string`` join0 [**-q** | **--quiet**] [*STRING*...]
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.. END SYNOPSIS
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Description
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-----------
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.. BEGIN DESCRIPTION
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``string join`` joins its STRING arguments into a single string separated by SEP, which can be an empty string. Exit status: 0 if at least one join was performed, or 1 otherwise.
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``string join0`` joins its STRING arguments into a single string separated by the zero byte (NUL), and adds a trailing NUL. This is most useful in conjunction with tools that accept NUL-delimited input, such as ``sort -z``. Exit status: 0 if at least one join was performed, or 1 otherwise.
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Because Unix uses NUL as the string terminator, passing the output of ``string join0`` as an *argument* to a command (via a :ref:`command substitution <expand-command-substitution>`) won't actually work. Fish will pass the correct bytes along, but the command won't be able to tell where the argument ends. This is a limitation of Unix' argument passing.
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.. END DESCRIPTION
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Examples
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--------
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.. BEGIN EXAMPLES
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::
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>_ seq 3 | string join ...
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1...2...3
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# Give a list of NUL-separated filenames to du (this is a GNU extension)
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>_ string join0 file1 file2 file\nwith\nmultiple\nlines | du --files0-from=-
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# Just put the strings together without a separator
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>_ string join '' a b c
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abc
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.. END EXAMPLES
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