browser, so that it's read in properly when we exit the file browser


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instead of "w+b" mode, since the latter truncates the file if it already
exists, and we don't need to do that since it's an error if the file
already exists


git-svn-id: svn://svn.savannah.gnu.org/nano/trunk/nano@2593 35c25a1d-7b9e-4130-9fde-d3aeb78583b8

file now uses safe_tempfile() instead of mkstemp() directly, and
safe_tempfile() requires get_full_path() and check_writable_directory()


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die_save_file() if it's been blanked out by get_next_file()'s failure to
find a unique filename


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already-opened files, such as the mkstemp()-created files used by the
spell-checking code


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unique by using get_next_filename() when necessary


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end up with a string that contains only part of a multibyte character
during tab completion


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multibyte character


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failures when building with DEBUG defined


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difference between them is that the former pads strings with nulls when
they're longer than the number of characters specified, which doesn't
appear to be used anywhere


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various parts of it; note that history tab completion has been removed


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comments


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MAX_BUF_SIZE as 128 in nano.h


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num_of_digits() take a size_t instead of a ssize_t, and rename
num_of_digits() to digits()


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NANO_EXIT_KEY anymore, for consistency


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