This tool can merge two PO files, where it takes the msgids from one file and the translations from another file. It is normally used to update a translation that was made for one version of a program, to be useful for the next version of the program, by merging the translation with a template that was extracted from the new source code.

       msgmerge - merge message catalog and template

       msgmerge [OPTION] def.po ref.pot

       Merges  two  Uniforum  style .po files together.	 The def.po file is an
       existing PO file with translations which will  be  taken	 over  to  the
       newly  created  file as long as they still match; comments will be pre-
       served, but extracted comments and file positions  will	be  discarded.
       The  ref.pot  file  is  the last created PO file with up-to-date source
       references but old translations, or a PO Template file (generally  cre-
       ated  by	 xgettext);  any  translations or comments in the file will be
       discarded, however dot comments and file positions will	be  preserved.
       Where an exact match cannot be found, fuzzy matching is used to produce
       better results.

       Mandatory arguments to long options are	mandatory  for	short  options

   Input file location:
       def.po translations referring to old sources

	      references to new sources

       -D, --directory=DIRECTORY
	      add DIRECTORY to list for input files search

       -C, --compendium=FILE
	      additional  library  of  message	translations, may be specified
	      more than once

   Operation mode:
       -U, --update
	      update def.po, do nothing if def.po already up to date

   Output file location:
       -o, --output-file=FILE
	      write output to specified file

       The results are written to standard output if no output file is	speci-
       fied or if it is -.

       Output  file  location  in  update  mode: The result is written back to

	      make a backup of def.po

	      override the usual backup suffix

       The version control method may be selected via the --backup  option  or
       through the VERSION_CONTROL environment variable.  Here are the values:

       none, off
	      never make backups (even if --backup is given)

       numbered, t
	      make numbered backups

       existing, nil
	      numbered if numbered backups exist, simple otherwise

       simple, never
	      always make simple backups

       The backup suffix  is  `~',  unless  set	 with  --suffix	 or  the  SIM-
       PLE_BACKUP_SUFFIX environment variable.

   Operation modifiers:
       -m, --multi-domain
	      apply ref.pot to each of the domains in def.po

   Output details:
       -e, --no-escape
	      do not use C escapes in output (default)

       -E, --escape
	      use C escapes in output, no extended chars

	      write PO file even if empty

       -i, --indent
	      indented output style

	      suppress '#: filename:line' lines

	      preserve '#: filename:line' lines (default)

	      strict Uniforum output style

       -w, --width=NUMBER
	      set output page width

	      do  not  break  long  message lines, longer than the output page
	      width, into several lines

       -s, --sort-output
	      generate sorted output

       -F, --sort-by-file
	      sort output by file location

   Informative output:
       -h, --help
	      display this help and exit

       -V, --version
	      output version information and exit

       -v, --verbose
	      increase verbosity level

       -q, --quiet, --silent
	      suppress progress indicators

       Written by Peter Miller.

       Report bugs to <>.

       Copyright (C) 1995-1998, 2000-2002 Free Software Foundation, Inc.
       This is free software; see the source for copying conditions.  There is
       NO  warranty;  not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR

       The full documentation for msgmerge is maintained as a Texinfo  manual.
       If  the info and msgmerge programs are properly installed at your site,
       the command

	      info msgmerge

       should give you access to the complete manual.