This report is about 2 separate issues in the dirname documentation. The
info page is much better than the manual page, but says:
`dirname' prints all but the final slash-delimited component of a
string (presumably a file name, but also works on directories).
The parenthese is wrong; there is no reason to presume the file given is
a regular file, dirname is equally useful on directories. "presumably"
should perhaps be replaced by "usually", or removed.
The manual page is much more confusing, saying:
DESCRIPTION
Print NAME with its trailing /component removed; if NAME contains no
/'s, output `.' (meaning the current directory).
dirname is more complex than just removing a trailing slash followed by
a pathname component if that is the ending. For example, it also removes
a slash followed by a pathname component followed by a slash, if that is
how the path terminates. The manual should probably adopt the info
page's formulation, which is more vague, but not wrong.
