commit - b7d8e86a72da7d644b7cf689545a66d15b608cd2
commit + aec641d24c0e41671097563d938a9ed21999c0ab
blob - c7de3531385d2618b2a080252c850c3f21633e4e
blob + 5123ce4a33aa43ed0af86569b4018237453866b5
--- src/cmd/rc/syn.y
+++ src/cmd/rc/syn.y
%term WORD REDIR DUP PIPE SUB
%term SIMPLE ARGLIST WORDS BRACE PAREN PCMD PIPEFD /* not used in syntax */
/* operator priorities -- lowest first */
+%left LOW
%left IF WHILE FOR SWITCH ')' NOT
%left ANDAND OROR
%left BANG SUBSHELL
%left '^'
%right '$' COUNT '"'
%left SUB
+%left '='
%{
#include "rc.h"
#include "fns.h"
word: keyword {lastword=1; $1->type=WORD;}
| comword
| word '^' word {$$=tree2('^', $1, $3);}
+| word '=' word %prec LOW {$$=tree2('^', tree2('^', $1, token("=", WORD)), $3);}
comword: '$' word {$$=tree1('$', $2);}
| '$' word SUB words ')' {$$=tree2(SUB, $2, $4);}
| '"' word {$$=tree1('"', $2);}