usr/src/cmd/ex/makeoptions

#
# remake options -- this isn't necessary unless you add/delete options
#
onintr ifintr
cp ex_data.c /tmp/$$.c
ex - /tmp/$$.c <<'%'
        g/^#include/d
        w
        q
'%'
cc -E $* /tmp/$$.c >/tmp/foo.c
ex - /tmp/foo.c <<'X'
        " delete all preprocessor output (# line, etc)
        g/^# /d
        set sh=/bin/csh
        " delete junk (all but data lines)
        g/^[    ]*$/d
        1,/option options/d
        /}/-1,$d
        " get rid of all of line but option name
        1,$s/   "//
        1,$s/".*//
        1m$     " kludge since options start at 0 but num at 1
        %!num
        $t0     " unkludge
        1s/......../     0  /   " unkludge
        " make #define lines
        1,$s/\(......\)\(.*\)/#define   \U\2\L  \1/
        " get rid of extra blanks, turning into (single) tabs.
        1,$s/    */     /g
        g/  */s//       /g
        " filter through expand to make it line up nice
        %!expand -8\,24
        " blank line and number of options.
        $i

.
        $s/e[   ].*[    ]/e     NOPTS   /
        0a
        /*  sccs id   @(#)  ex_vars.h  @(#)makeoptions  6.1 10/18/80  */
.
        w! ex_vars.h
        q
'X'
ifintr:
rm /tmp/foo.c