Change formatting of "file.rb @ line 1" to "file.rb:1"

This is how Ruby formats line numbers. It's more concisce and still
understandable.

README.md

@@ -216,7 +216,7 @@ instance methods beginning with 're' and display the source code for the `rep` m
     Pry#methods: re  readline  refresh  rep  repl  repl_epilogue  repl_prologue  retrieve_line
     pry(Pry):1> show-method rep -l
 
-    From: /home/john/ruby/projects/pry/lib/pry/pry_instance.rb @ line 143:
+    From: /home/john/ruby/projects/pry/lib/pry/pry_instance.rb:143
     Number of lines: 6
 
     143: def rep(target=TOPLEVEL_BINDING)
@@ -281,7 +281,7 @@ documentation for the `try_activate` method:
     pry(main)> cd Gem
     pry(Gem):1> show-doc try_activate
 
-    From: /Users/john/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/site_ruby/1.9.1/rubygems.rb @ line 201:
+    From: /Users/john/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/site_ruby/1.9.1/rubygems.rb:201
     Number of lines: 3
 
     Try to activate a gem containing path. Returns true if

lib/pry/commands/cat/exception_formatter.rb

@@ -70,7 +70,7 @@ class Pry
         unindent %{
         #{bold 'Exception:'} #{ex.class}: #{ex.message}
         --
-        #{bold('From:')} #{backtrace_file} @ line #{backtrace_line} @ #{bold("level: #{backtrace_level}")} of backtrace (of #{ex.backtrace.size - 1}).
+        #{bold('From:')} #{backtrace_file}:#{backtrace_line} @ #{bold("level: #{backtrace_level}")} of backtrace (of #{ex.backtrace.size - 1}).
 
       }
       end

lib/pry/commands/show_info.rb

@@ -81,7 +81,7 @@ class Pry
       mod.number_of_candidates.times do |v|
         candidate = mod.candidate(v)
         begin
-          result << "\nCandidate #{v + 1}/#{mod.number_of_candidates}: #{candidate.source_file} @ line #{candidate.source_line}:\n"
+          result << "\nCandidate #{v + 1}/#{mod.number_of_candidates}: #{candidate.source_file}:#{candidate.source_line}\n"
           content = content_for(candidate)
 
           result << "Number of lines: #{content.lines.count}\n\n" << content
@@ -103,7 +103,7 @@ class Pry
       file_name, line_num = file_and_line_for(code_object)
       content = content_for(code_object)
 
-      h = "\n#{bold('From:')} #{file_name} "
+      h = "\n#{bold('From:')} #{file_name}"
       h << code_object_header(code_object, line_num)
       h << "\n#{bold('Number of lines:')} " << "#{content.lines.count}\n\n"
       h << bold('** Warning:') << " Cannot find code for #{@original_code_object.nonblank_name}. Showing superclass #{code_object.nonblank_name} instead. **\n\n" if @used_super
@@ -130,7 +130,7 @@ class Pry
 
     def method_header(code_object, line_num)
       h = ""
-      h << (code_object.c_method? ? "(C Method):" : "@ line #{line_num}:")
+      h << (code_object.c_method? ? "(C Method):" : ":#{line_num}:")
       h << method_sections(code_object)[:owner]
       h << method_sections(code_object)[:visibility]
       h << method_sections(code_object)[:signature]
@@ -139,7 +139,7 @@ class Pry
 
     def module_header(code_object, line_num)
       h = ""
-      h << "@ line #{line_num}:\n"
+      h << ":#{line_num}\n"
       h << bold(code_object.module? ? "Module" : "Class")
       h << " #{bold('name:')} #{code_object.nonblank_name}"
 

lib/pry/commands/whereami.rb

@@ -81,7 +81,7 @@ class Pry
     end
 
     def location
-      "#{@file} @ line #{@line} #{@method && @method.name_with_owner}"
+      "#{@file}:#{@line} #{@method && @method.name_with_owner}"
     end
 
     def process

spec/commands/whereami_spec.rb

@@ -119,7 +119,7 @@ describe "whereami" do
   #   proc { Cor.new.blimey! }.should.raise(MethodSource::SourceNotFoundError)
 
   #   Pad.tester.last_output.should =~
-  #     /From: not.found.file.erb @ line 7 Cor#blimey!:/
+  #     /From: not.found.file.erb:7 Cor#blimey!/
   #   Object.remove_const(:Cor)
   # end