/usr/share/fish/man/man1/realpath.1 is in fish-common 2.4.0-1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 | .TH "realpath" 1 "Sun Dec 11 2016" "Version 2.4.0" "fish" \" -*- nroff -*-
.ad l
.nh
.SH NAME
\fBrealpath\fP -- Convert a path to an absolute path without symlinks
.PP
.SS "Synopsis"
.PP
.nf
\fBrealpath\fP path
.fi
.PP
.SS "Description"
This is implemented as a function and a builtin\&. The function will attempt to use an external realpath command if one can be found\&. Otherwise it falls back to the builtin\&. The builtin does not support any options\&. It's meant to be used only by scripts which need to be portable\&. The builtin implementation behaves like GNU realpath when invoked without any options (which is the most common use case)\&. In general scripts should not invoke the builtin directly\&. They should just use \fCrealpath\fP\&.
.PP
If the path is invalid no translated path will be written to stdout and an error will be reported\&.
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