#13664: Ill formatted warning about tabulators -------------------------------------+------------------------------------- Reporter: Lemming | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.2.1-rc1 Keywords: | Operating System: Unknown/Multiple Architecture: | Type of failure: None/Unknown Unknown/Multiple | Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- GHC-8.2.0.20170505 does not format warnings about tabulators very well. It seems to use the tab character for formatting, which yields too few spaces when formatted, and in turn too many characters are colored. (It is hard to present the problem in this ticket, though.) {{{ $ cat Tabulator.hs module Tabulator where x :: Int x = 1*2*3*4*5*6*7*8*9 -- we use a tab for indentation here $ ghc-8.2.0.20170505 -Wall Tabulator.hs [1 of 1] Compiling Tabulator ( Tabulator.hs, Tabulator.o ) Tabulator.hs:5:1: warning: [-Wtabs] Tab character found here. Please use spaces instead. | 5 | 1*2*3*4*5*6*7*8*9 | ^^^^^^^^ }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/13664 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler