vlook
strassign(vlook(arg), linebuf,
np = vlook(rp->r_name);
varNR = vlook(s_NR);
varFNR = vlook(s_FNR);
varNF = vlook(s_NF);
varOFMT = vlook(s_OFMT);
varCONVFMT = vlook(s_CONVFMT);
varOFS = vlook(s_OFS);
varORS = vlook(s_ORS);
varRS = vlook(s_RS);
varFS = vlook(s_FS);
varARGC = vlook(s_ARGC);
varSUBSEP = vlook(s_SUBSEP);
varENVIRON = vlook(s_ENVIRON);
varFILENAME = vlook(s_FILENAME);
varSYMTAB = vlook(s_SYMTAB);
ARGVsubi = node(INDEX, vlook(s_ARGV), constant);
yylval.node = np = vlook(linebuf);
strassign(vlook(arg), linebuf, FALLOC|FSENSE,
np = vlook(exprstring(np));
np = vlook(cp);
(void)assign(vlook(M_MB_L("RLENGTH")), constant);
return (assign(vlook(M_MB_L("RSTART")), intnode((INT)pos)));