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https://github.com/fish-shell/fish-shell
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ad4530acd3
This matches the style in man(1) (except that we use the … ligature). A previous iteration did the reverse (never use a space before the ellipsis). That would be a smaller change.
59 lines
1.5 KiB
ReStructuredText
59 lines
1.5 KiB
ReStructuredText
.. _cmd-string-length:
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string-length - print string lengths
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====================================
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Synopsis
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--------
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.. BEGIN SYNOPSIS
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``string`` length [**-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 length`` reports the length of each string argument in characters. Exit status: 0 if at least one non-empty STRING was given, or 1 otherwise.
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With ``-V`` or ``--visible``, it uses the visible width of the arguments. That means it will discount escape sequences fish knows about, account for $fish_emoji_width and $fish_ambiguous_width. It will also count each line (separated by ``\n``) on its own, and with a carriage return (``\r``) count only the widest stretch on a line. The intent is to measure the number of columns the STRING would occupy in the current terminal.
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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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>_ string length 'hello, world'
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12
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>_ set str foo
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>_ string length -q $str; echo $status
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0
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# Equivalent to test -n "$str"
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>_ string length --visible (set_color red)foobar
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# the set_color is discounted, so this is the width of "foobar"
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6
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>_ string length --visible 🐟🐟🐟🐟
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# depending on $fish_emoji_width, this is either 4 or 8
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# in new terminals it should be
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8
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>_ string length --visible abcdef\r123
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# this displays as "123def", so the width is 6
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6
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>_ string length --visible a\nbc
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# counts "a" and "bc" as separate lines, so it prints width for each
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1
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2
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.. END EXAMPLES
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