* doc/lispref/files.texi (Relative File Names, Directory Names)
(File Name Expansion):
* doc/lispref/minibuf.texi (Reading File Names):
Document expand-file-name behavior with ~ more clearly
and accurately.
* doc/misc/org.texi (Batch execution): Simplify example
script so that it does not need expand-file-name and thus
will not mishandle file names with leading ~.