Re: [Haskell-beginners] Warning: Tab Character

Huh, cool. I had no idea. Thanks! On Nov 21, 2015 7:44 PM, Dan Stromberg wrote:

I believe the first version of make required tabs, but some subsequent versions have relaxed that requirement to make things easier.

Here's an example on a Linux Mint system (the 20's are of course spaces) : $ od -cx < Makefile cmd output started 2015 Sat Nov 21 04:39:47 PM PST 0000000  \n   g   o   :  \n                   .   /   t  \n  \n            670a    3a6f    200a    2020    2e20    742f    0a0a 0000016 above cmd output done    2015 Sat Nov 21 04:39:47 PM PST dstromberg@dell-inspiron:/var/tmp/make-tabs i686-pc-linux-gnu 25234

$ make cmd output started 2015 Sat Nov 21 04:39:48 PM PST Makefile:3: *** missing separator.  Stop. above cmd output done    2015 Sat Nov 21 04:39:48 PM PST dstromberg@dell-inspiron:/var/tmp/make-tabs i686-pc-linux-gnu 25234

$ make --version cmd output started 2015 Sat Nov 21 04:39:53 PM PST GNU Make 3.81 Copyright (C) 2006  Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

This program built for i686-pc-linux-gnu above cmd output done    2015 Sat Nov 21 04:39:53 PM PST dstromberg@dell-inspiron:/var/tmp/make-tabs i686-pc-linux-gnu 25234

I'll add that vim's Makefile syntax highlighting puts the space-indented line in red, suggesting an error.  Changing the spaces to a single tab makes the red go away.

HTH

On Sat, Nov 21, 2015 at 3:34 PM, Thomas Jakway wrote:

...

Why would make require tabs...? Admittedly it's been a long time since I've written any makefiles by hand but I always use spaces instead of tabs and have never had any problems.

On Nov 21, 2015 6:01 PM, David Moberg wrote:

...

Have you found "soft tabs"? That option will make TextMate use spaces instead of tab characters. Read 4.11 "Using Spaces Instead of Tabs" in Dan Strombergs link for instrucitons.

2015-11-21 21:36 GMT+01:00 Jeon-Young Kang :

...

I've tried to choose "instead of spaces". But there is no option of mine (Textmate 2 beta).

On Sat, Nov 21, 2015 at 3:14 PM, Dan Stromberg wrote:

...

Perhaps enable soft tabs? https://manual.macromates.com/en/working_with_text

This is an issue in Python too (at least from PEP8's perspective) - but note that many "make" programs require tabs instead of spaces.

On Sat, Nov 21, 2015 at 11:13 AM, Jeon-Young Kang wrote:

...

Hello everyone.

I am a newbie of Haskell, using Textmate on mac.

I got the following warning. How can I fix it?

Warning:

    Tab character

Ok, modules loaded: Main.

Sincerely, Young

_______________________________________________ Beginners mailing list Beginners@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/beginners

-- Dan Stromberg

_______________________________________________ Beginners mailing list Beginners@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/beginners

-- Department of Geography State University of New York at Buffalo

jykang22@gmail.com   Jeon-Young Kang

_______________________________________________ Beginners mailing list Beginners@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/beginners

_______________________________________________ Beginners mailing list Beginners@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/beginners

-- Dan Stromberg