brew-audit - add check for tabs.

Add a new mode "brew audit --warn" that performs stricter checks
that might not need to be fixed.

Currently this includes a check for using tabs instead of spaces
for indentation; Homebrew style is "2-space indentation."

Documented this new switch.

1 files changed, 7 insertions, 1 deletions

diff --git a/Library/Contributions/examples/brew-audit.rb b/Library/Contributions/examples/brew-audit.rb
index 54d53d903..7b527f59b 100755
--- a/Library/Contributions/examples/brew-audit.rb
+++ b/Library/Contributions/examples/brew-audit.rb
@@ -80,7 +80,7 @@ def audit_formula_text text
   end
 
   # No trailing whitespace, please
-  if text =~ /[ ]+$/
+  if text =~ /(\t|[ ])+$/
     problems << " * Trailing whitespace was found."
   end
 
@@ -88,6 +88,12 @@ def audit_formula_text text
     problems << " * Use \"if ARGV.build_head?\" instead"
   end
 
+	if ARGV.include? "--warn"
+	  if text =~ /^\t/
+	    problems << " * Use spaces instead of tabs for indentation"
+	  end
+	end
+
   return problems
 end