makeinfo should accept - argument

[Bruno Haible]

Hi,

Many Unix utilities that take input file arguments also support '-' (just
an ASCII HYPHEN-MINUS) to designate standard input. (*) I expected this also
to hold for 'makeinfo', but it did not work:

$ makeinfo --version
makeinfo (GNU texinfo) 4.12.94
...
$ { echo '@firstparagraphindent insert'; cat install.texi; } \
  | makeinfo --plaintext --no-warn - >INSTALL
-: No such file or directory

Bruno


(*) This is also mentioned in POSIX:
    http://www.opengroup.org/susv3/basedefs/xbd_chap12.html
    see Guideline 13