01-30-2020
This function is quite well commented, it basically uses the tail command to print the last MAX_LENGTH ($2) lines of FILE ($1) these are stored in a temporary file (name generated by the mktmp command) the contents of this temporary file is then copied back over the original file and the temporary file removed.
All the operations performed are checked to ensure they have a success exit code before moving onto the next step.
Which particular part of the function you are having trouble understanding?
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LEARN ABOUT DEBIAN
pospell
pospell(1) User Manuals pospell(1)
NAME
pospell - Run a program on the translation strings of a .po-file
SYNOPSIS
pospell [-l language ] [-fsv] -n pofile -p program [-- [ arguments... ]]
DESCRIPTION
pospell copies the translations from the pofile to a temporary file (called the spellfile) and then calls program with its arguments. pro-
gram is supposed to somehow change the spellfile. It is typically a spell checker. Afterwards the possibly changed translations in spell-
file is copied back into the pofile.
If pofile is specified as - then pospell will act as a filter, i.e. standard input and standard output will be used.
%f in the arguments will be expanded to the name of the spellfile, or - if the -f option is used. Use %% for a real % character.
All comment lines in the pofile are replaced with lines with "#" as the only character in the spellfile. The msgid strings with original
text in the pofile are replaced with lines with ">" and "]" as the only characters in the spellfile. The msgstr strings with file headers
(i.e. strings without corresponding msgid strings) are replaced with lines with ")" and "]" as the only characters in the spellfile. Don't
change or remove these lines from the spellfile - they are used when the spellfile and the pofile are merged together after running the
program.
The normal msgstr strings are copied to the spellfile with some changes: 1) The word msgstr and everything else before the string is
replaced by a "+" character. 2) Strings with C escape sequences followed by a letter like "one two" are split to parts like "one "
"two". 3) Leading whitespace in continuation lines is removed. The changes of kind 1) and 2) are undone when the spellfile is copied back
into the pofile, but removed whitespace will not be restored.
OPTIONS
-f The called program is a filter so don't make a temporary file, but pipe the spellfile to its standard input and read it back from
its standard output.
-l language
Only translations with the indicated language code are copied to the spellfile.
-s Quit with an error message if unrecognized items are found in the pofile or spellfile.
-v Print the version and exit.
FILES
pospell uses one or two temporary files with names given by the mkstemp(3) or the tmpnam(3) function.
BUGS
If some system call gives an unexpected error pospell will stop immediately with an error message leaving its temporary files.
AUTHOR
Byrial Jensen <byrial@image.dk>
SEE ALSO
The GNU gettext utilities.
newsbody(1).
Unix APRIL 2000 pospell(1)