fix(frontends/lean/parse_rewrite_tactic): bugs in rewrite tactic parser
fix(frontends/lean/parse_rewrite_tactic): bugs in rewrite tactic parser

eigengrau/lean,c-cube/lean,leanprover/lean,leanprover-community/lean,fgdorais/lean,leodemoura/lean,levnach/lean,sp3ctum/lean,UlrikBuchholtz/lean,soonhokong/lean,leanprover-community/lean,leanprover/lean,avigad/lean,eigengrau/lean,leanprover/lean,soonhokong/lean,levnach/lean,fpvandoorn/lean2,fpvandoorn/lean,johoelzl/lean,dselsam/lean,eigengrau/lean,eigengrau/lean,Kha/lean,fgdorais/lean,javra/lean,fpvandoorn/lean,dselsam/lean,Kha/lean,leodemoura/lean,digama0/lean,sp3ctum/lean,leodemoura/lean,soonhokong/lean-windows,dselsam/lean,Kha/lean,rlewis1988/lean,fpvandoorn/lean2,digama0/lean,avigad/lean,soonhokong/lean-windows,digama0/lean,soonhokong/lean-windows,Kha/lean,leodemoura/lean,fgdorais/lean,avigad/lean,johoelzl/lean,avigad/lean,johoelzl/lean,htzh/lean,soonhokong/lean,soonhokong/lean-osx,avigad/lean,leodemoura/lean,leanprover-community/lean,sp3ctum/lean,levnach/lean,rlewis1988/lean,c-cube/lean,rlewis1988/lean,c-cube/lean,leanprover-community/lean,javra/lean,fpvandoorn/lean2,dselsam/lean,fpvandoorn/lean,leanprover/lean,fpvandoorn/lean2,leodemoura/lean,htzh/lean,fpvandoorn/lean,UlrikBuchholtz/lean,johoelzl/lean,Kha/lean,leanprover-community/lean,levnach/lean,sp3ctum/lean,rlewis1988/lean,digama0/lean,fgdorais/lean,fpvandoorn/lean,soonhokong/lean,levnach/lean,fpvandoorn/lean,soonhokong/lean-osx,htzh/lean,soonhokong/lean-windows,htzh/lean,fgdorais/lean,eigengrau/lean,javra/lean,javra/lean,c-cube/lean,johoelzl/lean,leanprover/lean,soonhokong/lean,digama0/lean,leanprover/lean,johoelzl/lean,Kha/lean,UlrikBuchholtz/lean,dselsam/lean,UlrikBuchholtz/lean,sp3ctum/lean,UlrikBuchholtz/lean,soonhokong/lean-osx,htzh/lean,avigad/lean,rlewis1988/lean,leanprover-community/lean,digama0/lean,rlewis1988/lean,fpvandoorn/lean2,javra/lean,fgdorais/lean,soonhokong/lean-windows,c-cube/lean,soonhokong/lean-osx,soonhokong/lean-osx,dselsam/lean