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(File Names): Add documentation of the tilde expansion in file names.

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From Nelson H. F. Beebe <beebe@math.utah.edu>.
This commit is contained in:
Eli Zaretskii 2001-02-23 11:23:10 +00:00
parent ae529c6424
commit 3d85335156
1 changed files with 9 additions and 1 deletions
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10
man/files.texi
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@ -97,6 +97,8 @@ with @samp{/usr/tmp/} and you add @samp{/x1/rms/foo}, you get
first slash in the double slash; the result is @samp{/x1/rms/foo}.
@xref{Minibuffer File}.
@cindex environment variables in file names
@cindex expansion of environment variables
@samp{$} in a file name is used to substitute environment variables.
For example, if you have used the shell command @command{export
FOO=rms/hacks} to set up an environment variable named @env{FOO}, then
@ -107,10 +109,16 @@ alternatively, it may be enclosed in braces after the @samp{$}. Note
that shell commands to set environment variables affect Emacs only if
done before Emacs is started.
@cindex home directory shorthand
You can use the @file{~/} in a file name to mean your home directory,
or @file{~@var{user-id}/} to mean the home directory of a user whose
login name is @code{user-id}.
To access a file with @samp{$} in its name, type @samp{$$}. This pair
is converted to a single @samp{$} at the same time as variable
substitution is performed for single @samp{$}. Alternatively, quote the
whole file name with @samp{/:} (@pxref{Quoted File Names}).
whole file name with @samp{/:} (@pxref{Quoted File Names}). File names
which begin with a literal @samp{~} should also be quoted with @samp{/:}.
@findex substitute-in-file-name
The Lisp function that performs the substitution is called