merge-info, merge and unmerge GNU Info index files


merge-info [OPTION ...] FILE FILE


merge-info can merge and unmerge the GNU Info index files named 'dir'. These files are usally created by install-info at install time of an application, or automatically generated by a mkinfodir script.

If you are installing 2 packages at two different locations, two different 'dir' files are created. Eg.: One in


and one in


This is the common case if you are using a tool like xstow(1). merge-info can handle this and can merge both 'dir' files and creates a new 'dir' file.


merge-info [OPTION ...] FILE FILE

Merge two files:

      merge-info /stow/foo/info/dir /stow/bar/info/dir

Remove the content of a 'dir' file from another 'dir' file

       merge-info -u /stow/foo/info/dir /stow/bar/info/dir


-dl -debug-level INT

Set's the debug level. An unsigned integer is accepted. The default value is 0.

-h -help

Shows a help screen.

-V -Version

Displays the verion number of the XStow package. merge-info is shipped with xstow(1).

-C -no-curses

Do not detect the terminal width by using curses.

-u -unmerge

Unmerge instead of merge. Note: It is not possible splitting up one 'dir' file into two. But removing the content of one 'dir' file from the other one is possible.

-o -outfile

Write the resulting 'dir' file not to stdout. Write it to a given file. Since merge-info does not open this outfile until all the merging or unmerging stuff is done it is allowed that the outfile is one the source files. eg.:

    merge-info -u foo/info/dir bar/info/dir -o foo/info/dir
-d -duplicate

Remove duplicate entries. When merging 2 files an entry can appear in more than one section. If you do not wan't this, use this option.



Same as the -debug-level option.


Same as the -no-curses option.

In previous versions xstow tried detecting the terminal width and height, by default at the startup routine. Even if this value is only used by the help screen. The result was:

    $ TERM="" xstow 
    Error opening terminal: unknown.

The error message is reported by the ncurses lib. This can cause problems if you wan't start xstow as a cron job. Now xstow tries detecting the terminal width not in it's startup, but when the help screen is printed out. As an extra option you can set the environment variable XSTOW_USE_CURSES="0" this will tell xstow not using curses anyway.

merge-info has the same behaviour.


merge-info was written by Martin Oberzalek <>.


merge-info, a tool for merging GNU Info index files.

Copyright (C) 2004-2005 by Martin Oberzalek <>

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.


info(1) install-info(1) xstow(1)