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@pindex msguniq
@cindex @code{msguniq} program, usage
@example
msguniq [@var{option}] [@var{inputfile}]
@end example
@cindex unify duplicate translations
@cindex duplicate removal
The @code{msguniq} program unifies duplicate translations in a translation
catalog. It finds duplicate translations of the same message ID. Such
duplicates are invalid input for other programs like @code{msgfmt},
@code{msgmerge} or @code{msgcat}. By default, duplicates are merged
together. When using the @samp{--repeated} option, only duplicates are
output, and all other messages are discarded. Comments and extracted
comments will be cumulated, except that if @samp{--use-first} is
specified, they will be taken from the first translation. File positions
will be cumulated. When using the @samp{--unique} option, duplicates are
discarded.
@subsection Input file location
@table @samp
@item @var{inputfile}
Input PO file.
@item -D @var{directory}
@itemx --directory=@var{directory}
@opindex -D@r{, @code{msguniq} option}
@opindex --directory@r{, @code{msguniq} option}
Add @var{directory} to the list of directories. Source files are
searched relative to this list of directories. The resulting @file{.po}
file will be written relative to the current directory, though.
@end table
If no @var{inputfile} is given or if it is @samp{-}, standard input is read.
@subsection Output file location
@table @samp
@item -o @var{file}
@itemx --output-file=@var{file}
@opindex -o@r{, @code{msguniq} option}
@opindex --output-file@r{, @code{msguniq} option}
Write output to specified file.
@end table
The results are written to standard output if no output file is specified
or if it is @samp{-}.
@subsection Message selection
@table @samp
@item -d
@itemx --repeated
@opindex -d@r{, @code{msguniq} option}
@opindex --repeated@r{, @code{msguniq} option}
Print only duplicates.
@item -u
@itemx --unique
@opindex -u@r{, @code{msguniq} option}
@opindex --unique@r{, @code{msguniq} option}
Print only unique messages, discard duplicates.
@end table
@subsection Output details
@c --no-escape and --escape omitted on purpose. They are not useful.
@table @samp
@item -t
@itemx --to-code=@var{name}
@opindex -t@r{, @code{msguniq} option}
@opindex --to-code@r{, @code{msguniq} option}
Specify encoding for output.
@item --use-first
@opindex --use-first@r{, @code{msguniq} option}
Use first available translation for each message. Don't merge several
translations into one.
@item --force-po
@opindex --force-po@r{, @code{msguniq} option}
Always write an output file even if it contains no message.
@item -i
@itemx --indent
@opindex -i@r{, @code{msguniq} option}
@opindex --indent@r{, @code{msguniq} option}
Write the .po file using indented style.
@item --no-location
@opindex --no-location@r{, @code{msguniq} option}
Do not write @samp{#: @var{filename}:@var{line}} lines.
@item -n
@itemx --add-location
@opindex -n@r{, @code{msguniq} option}
@opindex --add-location@r{, @code{msguniq} option}
Generate @samp{#: @var{filename}:@var{line}} lines (default).
@item --strict
@opindex --strict@r{, @code{msguniq} option}
Write out a strict Uniforum conforming PO file. Note that this
Uniforum format should be avoided because it doesn't support the
GNU extensions.
@item -w @var{number}
@itemx --width=@var{number}
@opindex -w@r{, @code{msguniq} option}
@opindex --width@r{, @code{msguniq} option}
Set the output page width. Long strings in the output files will be
split across multiple lines in order to ensure that each line's width
(= number of screen columns) is less or equal to the given @var{number}.
@item -s
@itemx --sort-output
@opindex -s@r{, @code{msguniq} option}
@opindex --sort-output@r{, @code{msguniq} option}
Generate sorted output. Note that using this option makes it much harder
for the translator to understand each message's context.
@item -F
@itemx --sort-by-file
@opindex -F@r{, @code{msguniq} option}
@opindex --sort-by-file@r{, @code{msguniq} option}
Sort output by file location.
@end table
@subsection Informative output
@table @samp
@item -h
@itemx --help
@opindex -h@r{, @code{msguniq} option}
@opindex --help@r{, @code{msguniq} option}
Display this help and exit.
@item -V
@itemx --version
@opindex -V@r{, @code{msguniq} option}
@opindex --version@r{, @code{msguniq} option}
Output version information and exit.
@end table
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