brew audit: show line number for whitespace

Closes Homebrew/homebrew#24481.
Closes Homebrew/homebrew#24490.

1 files changed, 3 insertions, 3 deletions

diff --git a/Library/Homebrew/cmd/audit.rb b/Library/Homebrew/cmd/audit.rb
index 509cef830..9f86577be 100644
--- a/Library/Homebrew/cmd/audit.rb
+++ b/Library/Homebrew/cmd/audit.rb
@@ -332,7 +332,7 @@ class FormulaAuditor
     end
   end
 
-  def audit_line(line)
+  def audit_line(line, lineno)
     if line =~ /<(Formula|AmazonWebServicesFormula|ScriptFileFormula|GithubGistFormula)/
       problem "Use a space in class inheritance: class Foo < #{$1}"
     end
@@ -410,7 +410,7 @@ class FormulaAuditor
 
     # No trailing whitespace, please
     if line =~ /[\t ]+$/
-      problem "Trailing whitespace was found"
+      problem "#{lineno}: Trailing whitespace was found"
     end
 
     if line =~ /if\s+ARGV\.include\?\s+'--(HEAD|devel)'/
@@ -568,7 +568,7 @@ class FormulaAuditor
     audit_conflicts
     audit_patches
     audit_text
-    text.each_line { |line| audit_line(line) }
+    text.split("\n").each_with_index { |line, lineno| audit_line(line, lineno) }
     audit_installed
   end