Cpp Coding Standards/FORMAT/NoTabs
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No Tabs
Various editors have different ways to turn on the "use spaces not tabs" setting. See Category:Developer_Tools for advice on configuring your favorite editor to use spaces instead of tabs.
in-line markup
I reckon it's best to set the appropriate directives in the files you own, along the line of e.g. sw/source/filter/ww8/ww8par.cxx
where the last line is
/* vi:set tabstop=4 shiftwidth=4 expandtab: */
I'm not sure if the corresponding
/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil -*- */
near the top is sufficient to "do the right thing" for emacs ?