in a magicline, and to rely on fileage and filebot instead of NULL for
their checks to detect the top or bottom of the file


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get_statusbar_page_start(), the statusbar prompt's equivalent of
get_page_start(); also make sure that the minimum allowed terminal size
in columns is 4, as the statusbar prompt code relies on this assumption
and will crash otherwise


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renumber() isn't NULL, and update related comments


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spell checking, justifying, and word counting) to their own source file,
text.c


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where possible


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match to it are not the same length in bytes, since the same technique
can't be made to work with tab completion matches


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to the bottom if we cancel out of the prompt


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the same length in bytes, i.e, when the latter contains invalid
multibyte characters interpreted as normal characters


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edit_refresh(); edit_update() is only called without edit_refresh() in
do_gotolinecolumn() if allow_update is FALSE, and in edit_refresh()
itself if edittop is out of range of current


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"+LINE,COLUMN" arguments on the command line, don't update the screen
when moving to their specified lines and columns


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that the values in it are used directly instead of being periodically
synced up with the globals; accordingly, remove the globals; this
changes pretty much every function


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displaying the "Replace" prompt


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ssize_t are different sizes.  Make filestruct->lineno a ssize_t (so that
we can avoid negative line numbers at the "Go To Line" prompt),
current_y a ssize_t (in order to hold the maximum difference between two
filestruct->lineno's), totlines a size_t, and change related variables
to match


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ease of maintenance


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numm-termination is needed in some places


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consistency, and save the search direction and regexp setting in two
bools instead of one flags variable


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"casesensitive" and "backwards" rcfile options for consistency,
documentation updates, and related cleanups


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is_whole_word()


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do_replace_loop(), as it breaks display in some ways


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unless it's the only match, as the old history code did


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get the word that we're going to highlight


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