From 7c6210d6e6cae5f91134f9f6522d724a5816e58a Mon Sep 17 00:00:00 2001 From: aarne Date: Fri, 18 Nov 2005 14:24:12 +0000 Subject: [PATCH] matching with "" --- src/GF/Grammar/PatternMatch.hs | 1 + 1 file changed, 1 insertion(+) diff --git a/src/GF/Grammar/PatternMatch.hs b/src/GF/Grammar/PatternMatch.hs index cbf77063d..696f19e78 100644 --- a/src/GF/Grammar/PatternMatch.hs +++ b/src/GF/Grammar/PatternMatch.hs @@ -59,6 +59,7 @@ tryMatch (p,t) = do (PV IW, _) | isInConstantForm t -> return [] -- optimization with wildcard (PV x, _) | isInConstantForm t -> return [(x,t)] (PString s, ([],K i,[])) | s==i -> return [] + (PString "",([],Empty,[])) -> return [] -- because "" = [""] = [] (PInt s, ([],EInt i,[])) | s==i -> return [] (PC p pp, ([], Con f, tt)) | p `eqStrIdent` f && length pp == length tt ->