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When writing scripts for other shells, it can be confusing and annoying that our `man` function shadows other manual pages, for example `exec(1p)` from [Linux man-pages]. I almost never want to see the fish variant for such contended cases (which obviuosly don't include fish-specific commands like `string`, only widely-known shell builtins). For the contented cases like `exec`, the POSIX documentation is more substantial and useful, since it describes a (sub)set of languages widely used for scripting. Because of this I think we should stop overriding the system's man pages. Nowadays we offer `exec -h` as intuitive way to show the documentation for the fish-specific command (note that `help` is not a good replacement because it uses a web browser). Looking through the contended commands, it seems like for most of them, the fish version is not substantially different from the system version. A notable exception is `read` but I don't think it's a very important one. So I think we should can sacrifice a bit of the native fish-scripting experience in exchange for playing nicer with other shells. I think the latter is more important because scripting is not our focus, the way I see it. So maybe put our manpath at the end. In lieu of that, let's at least have `exec.rst` reference the system variant. [Linux man-pages]: https://www.kernel.org/doc/man-pages/ Closes #10376
87 lines
1.3 KiB
ReStructuredText
87 lines
1.3 KiB
ReStructuredText
.. _cmd-echo:
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echo - display a line of text
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=============================
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Synopsis
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--------
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.. synopsis::
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echo [OPTIONS] [STRING]
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Description
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-----------
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.. only:: builder_man
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NOTE: This page documents the fish builtin ``echo``.
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To see the documentation on any non-fish versions, use ``command man echo``.
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``echo`` displays *STRING* of text.
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The following options are available:
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**-n**
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Do not output a newline.
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**-s**
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Do not separate arguments with spaces.
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**-E**
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Disable interpretation of backslash escapes (default).
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**-e**
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Enable interpretation of backslash escapes.
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Unlike other shells, this echo accepts ``--`` to signal the end of the options.
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Escape Sequences
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----------------
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If ``-e`` is used, the following sequences are recognized:
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- ``\`` backslash
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- ``\a`` alert (BEL)
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- ``\b`` backspace
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- ``\c`` produce no further output
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- ``\e`` escape
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- ``\f`` form feed
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- ``\n`` new line
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- ``\r`` carriage return
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- ``\t`` horizontal tab
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- ``\v`` vertical tab
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- ``\0NNN`` byte with octal value NNN (1 to 3 digits)
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- ``\xHH`` byte with hexadecimal value HH (1 to 2 digits)
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Example
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-------
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::
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> echo 'Hello World'
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Hello World
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> echo -e 'Top\nBottom'
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Top
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Bottom
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> echo -- -n
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-n
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See Also
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--------
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- the :doc:`printf <printf>` command, for more control over output formatting
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