tcc -E: preserve spaces (partial solution)
Recently I needed to trim storage space on an embedded distro which has
X.
X depend on cpp which is ~8MB in size as shipped in Debian, so the idea
was to remove cpp and use `tcc -E` instead where appropriate.
I've done this with the following 'hack' put inplace of /usr/bin/cpp :
#!/bin/sh -e
TCC=/home/kirr/local/tcc/bin/tcc
last="${!#}"
# hack to distinguish between '... -D...' and '... file'
if test -r "$last"; then
exec $TCC -E "$@"
else
exec $TCC -E "$@" -
fi
But the problem turned out to be in `tcc -E` inability to preserve
spaces between tokens. So e.g. the following ~/.Xresources
XTerm*VT100*foreground: black
...
got translated to
XTerm * VT100 * foreground : black
which is bad, bacause now X don't understand it.
Below is a newbie "fix" for the problem.
It still does not preserve spaces on macro expansion, but since the fix
cures original problem, I think it is at least one step forward.
Signed-off-by: Kirill Smelkov <kirr@landau.phys.spbu.ru>