Add CommandInterpreter.repeatLastRelativeAddress

src/atom/command-interpreter.coffee

@@ -6,7 +6,11 @@ class CommandInterpreter
   constructor: ->
     @parser = PEG.buildParser(fs.read(require.resolve 'commands.pegjs'))
 
-  eval: (editor, command) ->
-    operations = @parser.parse(command)
-    operation.execute(editor) for operation in operations
+  eval: (editor, string) ->
+    command = @parser.parse(string)
+    @lastRelativeAddress = command if command.isRelativeAddress()
+    command.execute(editor)
+
+  repeatLastRelativeAddress: (editor) ->
+    @lastRelativeAddress.execute(editor)
 

src/atom/command-interpreter/address-range.coffee

@@ -7,3 +7,6 @@ class AddressRange extends Address
 
   getRange: (editor) ->
     new Range(@startAddress.getRange(editor).start, @endAddress.getRange(editor).end)
+
+  isRelative: ->
+    @startAddress.isRelative() or @endAddress.isRelative()

src/atom/command-interpreter/address.coffee

@@ -1,4 +1,8 @@
+Command = require 'command-interpreter/command'
+
 module.exports =
-class Address
+class Address extends Command
   execute: (editor) ->
     editor.getSelection().setBufferRange(@getRange(editor))
+
+  isAddress: -> true

src/atom/command-interpreter/command.coffee

@@ -0,0 +1,5 @@
+_ = require 'underscore'
+
+module.exports =
+class Command
+  isAddress: -> false

src/atom/command-interpreter/composite-command.coffee

@@ -0,0 +1,12 @@
+_ = require 'underscore'
+
+module.exports =
+class CompositeCommand
+  constructor: (@subcommands) ->
+
+  execute: (editor) ->
+    command.execute(editor) for command in @subcommands
+
+  isRelativeAddress: ->
+    _.all(@subcommands, (command) -> command.isAddress() and command.isRelative())
+

src/atom/command-interpreter/current-selection-address.coffee

@@ -5,3 +5,5 @@ module.exports =
 class CurrentSelectionAddress extends Address
   getRange: (editor) ->
     editor.getSelection().getBufferRange()
+
+  isRelative: -> true

src/atom/command-interpreter/eof-address.coffee

@@ -6,4 +6,6 @@ class EofAddress extends Address
   getRange: (editor) ->
     lastRow = editor.getLastBufferRow()
     column = editor.getBufferLineLength(lastRow)
-    new Range([lastRow, column], [lastRow, column])
+    new Range([lastRow, column], [lastRow, column])
+
+  isRelative: -> false

src/atom/command-interpreter/line-address.coffee

@@ -8,3 +8,5 @@ class LineAddress extends Address
 
   getRange: ->
     new Range([@row, 0], [@row + 1, 0])
+
+  isRelative: -> false

src/atom/command-interpreter/regex-address.coffee

@@ -23,4 +23,6 @@ class RegexAddress extends Address
 
       return new Range(startPosition, endPosition)
     else
-      return selectedRange
+      return selectedRange
+
+  isRelative: -> true

src/atom/command-interpreter/substitution.coffee

@@ -1,5 +1,7 @@
+Command = require 'command-interpreter/command'
+
 module.exports =
-class Substitution
+class Substitution extends Command
   global: false
 
   constructor: (@findText, @replaceText, @options) ->
@@ -28,3 +30,4 @@ class Substitution
       text = text[(match.index + match[0].length)..]
       startIndex = matchStartIndex + @replaceText.length
       @replace(editor, text, startIndex)
+

src/atom/commands.pegjs

@@ -1,4 +1,5 @@
 {
+  var CompositeCommand = require('command-interpreter/composite-command')
   var Substitution = require('command-interpreter/substitution');
   var LineAddress = require('command-interpreter/line-address');
   var AddressRange = require('command-interpreter/address-range');
@@ -9,10 +10,11 @@
 
 start
   = address:address? _ command:substitution? {
-    var operations = [];
-    if (address) operations.push(address);
-    if (command) operations.push(command);
-    return operations;
+    var commands = [];
+    if (address) commands.push(address);
+    if (command) commands.push(command);
+
+    return new CompositeCommand(commands);
   }
 
 address = addressRange / primitiveAddress