brew audit - more aggressive path shortcut suggestions

Library/Contributions/examples/brew-audit.rb

@@ -12,10 +12,12 @@ ff.each do |f|
 
   File.open(f.path, "r") { |afile| text = afile.read }
 
+  # Commented-out cmake support from default template
   if text =~ /# depends_on 'cmake'/
     problems << " * Commented cmake support found."
   end
 
+  # SourceForge URL madness
   if text =~ /\?use_mirror=/
     problems << " * Remove 'use_mirror' from url."
   end
@@ -25,16 +27,36 @@ ff.each do |f|
     problems << " * Check indentation of 'depends_on'."
   end
 
+  # Check for string concatenation; prefer interpolation
   if text =~ /(#\{\w+\s*\+\s*['"][^}]+\})/
     problems << " * Try not to concatenate paths in string interpolation:\n   #{$1}"
   end
 
+  # Prefer formula path shortcuts in Pathname+
+  if text =~ %r{\(\s*(prefix\s*\+\s*(['"])(bin|include|lib|libexec|sbin|share))}
+    problems << " * \"(#{$1}...#{$2})\" should be \"(#{$3}+...)\""
+  end
+
+  # Prefer formula path shortcuts in strings
+  if text =~ %r[(\#\{prefix\}/(bin|include|lib|libexec|sbin|share))]
+    problems << " * \"#{$1}\" should be \"\#{#{$2}}\""
+  end
+
+  if text =~ %r[(\#\{prefix\}/share/man/(man[1-8]))]
+    problems << " * \"#{$1}\" should be \"\#{#{$2}}\""
+  end
+
+  if text =~ %r[(\#\{prefix\}/share/(info|man))]
+    problems << " * \"#{$1}\" should be \"\#{#{$2}}\""
+  end
+
   # Don't complain about spaces in patches
   split_patch = (text.split("__END__")[0]).strip()
   if split_patch =~ /[ ]+$/
     problems << " * Trailing whitespace was found."
   end
 
+  # Don't depend_on aliases; use full name
   aliases = Formula.aliases
   f.deps.select {|d| aliases.include? d}.each do |d|
     problems << " * Dep #{d} is an alias; switch to the real name."