Edit mode: first working visual mode.

1 files changed, 14 insertions, 0 deletions

diff --git a/lib/utils.coffee b/lib/utils.coffee
index 661f7e84..f8eb5457 100644
--- a/lib/utils.coffee
+++ b/lib/utils.coffee
@@ -152,6 +152,20 @@ Utils =
   # locale-sensitive uppercase detection
   hasUpperCase: (s) -> s.toLowerCase() != s
 
+  # Allow a function call to be suppressed.  Use Utils.suppress.unlessSuppressed to call a function, unless it
+  # is suppressed via the given key.  Use Utils.suppressor.suppress to call a function while suppressing the
+  # given key.
+  suppressor: do ->
+    suppressed = {}
+
+    suppress: (key, func) ->
+      suppressed[key] = if suppressed[key]? then suppressed[key] + 1 else 1
+      func()
+      suppressed[key] -= 1
+
+    unlessSuppressed: (key, func) ->
+      func() unless suppressed[key]? and 0 < suppressed[key]
+
 # This creates a new function out of an existing function, where the new function takes fewer arguments. This
 # allows us to pass around functions instead of functions + a partial list of arguments.
 Function::curry = ->