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Diffstat (limited to 'src/GF/Canon/PrintGFC.hs')
| -rw-r--r-- | src/GF/Canon/PrintGFC.hs | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/src/GF/Canon/PrintGFC.hs b/src/GF/Canon/PrintGFC.hs index 77e60c75d..e2b6e057a 100644 --- a/src/GF/Canon/PrintGFC.hs +++ b/src/GF/Canon/PrintGFC.hs @@ -69,12 +69,13 @@ instance Print Double where prt _ x = doc (shows x) instance Print Char where - prt _ s = doc (showChar '\'' . mkEsc s . showChar '\'') - prtList s = doc (showChar '"' . concatS (map mkEsc s) . showChar '"') + prt _ s = doc (showChar '\'' . mkEsc '\'' s . showChar '\'') + prtList s = doc (showChar '"' . concatS (map (mkEsc '"') s) . showChar '"') -mkEsc :: Char -> ShowS -mkEsc s = case s of - _ | elem s "\\\"'" -> showChar '\\' . showChar s +mkEsc :: Char -> Char -> ShowS +mkEsc q s = case s of + _ | s == q -> showChar '\\' . showChar s + '\\'-> showString "\\\\" '\n' -> showString "\\n" '\t' -> showString "\\t" _ -> showChar s |