builder/vmware: interrupts work during VNC type on VMware

CHANGELOG.md

@@ -38,6 +38,7 @@ BUG FIXES:
   written to the FAT12 filesystem. [GH-285]
 * builder/vmware: dowload progress won't be shown until download
   actually starts. [GH-288]
+* builder/vmware: interrupt works while typing commands over VNC.
 * builder/virtualbox: floppy files names of 13 characters are now properly
   written to the FAT12 filesystem. [GH-285]
 * post-processor/vagrant: Process user variables. [GH-295]

builder/vmware/step_type_boot_command.go

@@ -96,6 +96,12 @@ func (s *stepTypeBootCommand) Run(state map[string]interface{}) multistep.StepAc
 			return multistep.ActionHalt
 		}
 
+		// Check for interrupts between typing things so we can cancel
+		// since this isn't the fastest thing.
+		if _, ok := state[multistep.StateCancelled]; ok {
+			return multistep.ActionHalt
+		}
+
 		vncSendString(c, command)
 	}