#9428: Pretty printer bad formatting -------------------------------------+------------------------------------- Reporter: terrelln | Owner: Type: bug | Status: new Priority: lowest | Milestone: Component: Driver | Version: 7.6.3 Keywords: pretty print | Operating System: Architecture: Unknown/Multiple | Unknown/Multiple Difficulty: Unknown | Type of failure: Other Blocked By: | Test Case: Related Tickets: | Blocking: | Differential Revisions: -------------------------------------+------------------------------------- When compiling with `-fwarn-incomplete-patterns`, the first test case `s17.hs` (attached) outputs unmatched patterns correctly. {{{ test.hs:4:1: Warning: Pattern match(es) are non-exhaustive In an equation for `f': Patterns not matched: B _ B _ B _ B _ B _ B _ B _ B _ B _ B _ B _ B _ B _ B _ B _ B _ B _ B _ B _ B _ B _ B _ B _ B _ B _ B _ B _ B _ B _ B _ B _ B _ B _ A B B _ B _ B _ B _ B _ B _ B _ B _ B _ B _ B _ B _ B _ B _ B _ A B B _ B _ B _ B _ B _ B _ B _ B _ B _ B _ B _ B _ B _ B _ B _ B _ A B A B ... }}} However, when compiling `s18.hs` each argument is printed on its own line. 16 lines of the output are included below. {{{ test.hs:4:1: Warning: Pattern match(es) are non-exhaustive In an equation for `f': Patterns not matched: B _ B _ B _ B _ B _ B _ }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9428 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler