diff --git a/LICENSE b/LICENSE
index 808ecf3..a6e3b3e 100644
--- a/LICENSE
+++ b/LICENSE
@@ -186,7 +186,7 @@
       same "printed page" as the copyright notice for easier
       identification within third-party archives.
 
-   Copyright 2017-2018 Cloud Posse, LLC
+   Copyright 2017-2019 Cloud Posse, LLC
 
    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.
diff --git a/README.md b/README.md
index 0b5684d..26cabf4 100644
--- a/README.md
+++ b/README.md
@@ -9,7 +9,7 @@
 Terraform module designed to generate consistent label names and tags for resources. Use `terraform-null-label` to implement a strict naming convention.
 
 A label follows the following convention: `{namespace}-{environment}-{stage}-{name}-{attributes}`. The delimiter (e.g. `-`) is interchangeable.
-The label items are all optional. So if you perfer the term `stage` to `environment` you can exclude environment and the label `id` will look like `{namespace}-{stage}-{name}-{attributes}`.
+The label items are all optional. So if you prefer the term `stage` to `environment` you can exclude environment and the label `id` will look like `{namespace}-{stage}-{name}-{attributes}`.
 If attributes are excluded but `stage` and `environment` are included, `id` will look like `{namespace}-{environment}-{stage}-{name}`
 
 It's recommended to use one `terraform-null-label` module for every unique resource of a given resource type.
diff --git a/README.yaml b/README.yaml
index 4095088..20452f0 100644
--- a/README.yaml
+++ b/README.yaml
@@ -52,7 +52,7 @@ description: |-
   Terraform module designed to generate consistent label names and tags for resources. Use `terraform-null-label` to implement a strict naming convention.
 
   A label follows the following convention: `{namespace}-{environment}-{stage}-{name}-{attributes}`. The delimiter (e.g. `-`) is interchangeable.
-  The label items are all optional. So if you perfer the term `stage` to `environment` you can exclude environment and the label `id` will look like `{namespace}-{stage}-{name}-{attributes}`.
+  The label items are all optional. So if you prefer the term `stage` to `environment` you can exclude environment and the label `id` will look like `{namespace}-{stage}-{name}-{attributes}`.
   If attributes are excluded but `stage` and `environment` are included, `id` will look like `{namespace}-{environment}-{stage}-{name}`
 
   It's recommended to use one `terraform-null-label` module for every unique resource of a given resource type.
diff --git a/main.tf b/main.tf
index 477acde..483bb90 100644
--- a/main.tf
+++ b/main.tf
@@ -24,25 +24,28 @@ locals {
   # else
   #   thing
 
-  names                          = "${concat(local.context_local["name"], list(""))}"
-  name_context_or_default        = "${length(local.names[0]) > 0 ? local.names[0] : var.name}"
-  name_or_context                = "${var.name != ""? var.name : local.name_context_or_default}"
-  name                           = "${lower(replace(local.name_or_context, var.regex_replace_chars, ""))}"
-  namespaces                     = "${concat(local.context_local["namespace"], list(""))}"
-  namespace_context_or_default   = "${length(local.namespaces[0]) > 0 ? local.namespaces[0] : var.namespace}"
-  namespace_or_context           = "${var.namespace != "" ? var.namespace : local.namespace_context_or_default}"
-  namespace                      = "${lower(replace(local.namespace_or_context, var.regex_replace_chars, ""))}"
-  environments                   = "${concat(local.context_local["environment"], list(""))}"
-  environment_context_or_default = "${length(local.environments[0]) > 0 ? local.environments[0] : var.environment}"
-  environment_or_context         = "${var.environment != "" ? var.environment : local.environment_context_or_default}"
-  environment                    = "${lower(replace(local.environment_or_context, var.regex_replace_chars, ""))}"
-  stages                         = "${concat(local.context_local["stage"], list(""))}"
-  stage_context_or_default       = "${length(local.stages[0]) > 0 ? local.stages[0] : var.stage}"
-  stage_or_context               = "${var.stage != "" ? var.stage : local.stage_context_or_default}"
-  stage                          = "${lower(replace(local.stage_or_context, var.regex_replace_chars, ""))}"
-  delimiters                     = "${concat(local.context_local["delimiter"], list(""))}"
-  delimiter_context_or_default   = "${length(local.delimiters[0]) > 0 ? local.delimiters[0] : var.delimiter}"
-  delimiter                      = "${var.delimiter != "-" ? var.delimiter : local.delimiter_context_or_default}"
+  regex_replace_chars_context            = "${concat(local.context_local["regex_replace_chars"], list(""))}"
+  regex_replace_chars_context_or_default = "${length(local.regex_replace_chars_context[0]) > 0 ? local.regex_replace_chars_context[0] : var.regex_replace_chars}"
+  regex_replace_chars                    = "${var.regex_replace_chars != "" ? var.regex_replace_chars : local.regex_replace_chars_context_or_default}"
+  names                                  = "${concat(local.context_local["name"], list(""))}"
+  name_context_or_default                = "${length(local.names[0]) > 0 ? local.names[0] : var.name}"
+  name_or_context                        = "${var.name != "" ? var.name : local.name_context_or_default}"
+  name                                   = "${lower(replace(local.name_or_context, local.regex_replace_chars, ""))}"
+  namespaces                             = "${concat(local.context_local["namespace"], list(""))}"
+  namespace_context_or_default           = "${length(local.namespaces[0]) > 0 ? local.namespaces[0] : var.namespace}"
+  namespace_or_context                   = "${var.namespace != "" ? var.namespace : local.namespace_context_or_default}"
+  namespace                              = "${lower(replace(local.namespace_or_context, local.regex_replace_chars, ""))}"
+  environments                           = "${concat(local.context_local["environment"], list(""))}"
+  environment_context_or_default         = "${length(local.environments[0]) > 0 ? local.environments[0] : var.environment}"
+  environment_or_context                 = "${var.environment != "" ? var.environment : local.environment_context_or_default}"
+  environment                            = "${lower(replace(local.environment_or_context, local.regex_replace_chars, ""))}"
+  stages                                 = "${concat(local.context_local["stage"], list(""))}"
+  stage_context_or_default               = "${length(local.stages[0]) > 0 ? local.stages[0] : var.stage}"
+  stage_or_context                       = "${var.stage != "" ? var.stage : local.stage_context_or_default}"
+  stage                                  = "${lower(replace(local.stage_or_context, local.regex_replace_chars, ""))}"
+  delimiters                             = "${concat(local.context_local["delimiter"], list(""))}"
+  delimiter_context_or_default           = "${length(local.delimiters[0]) > 0 ? local.delimiters[0] : var.delimiter}"
+  delimiter                              = "${var.delimiter != "-" ? var.delimiter : local.delimiter_context_or_default}"
   # Merge attributes
   attributes = ["${distinct(compact(concat(var.attributes, local.context_local["attributes"])))}"]
   # Generate tags (don't include tags with empty values)
@@ -58,15 +61,16 @@ locals {
   label_order_length       = "${(length(local.label_order_final_list))}"
   # Context of this label to pass to other label modules
   output_context = {
-    name        = ["${local.name}"]
-    namespace   = ["${local.namespace}"]
-    environment = ["${local.environment}"]
-    stage       = ["${local.stage}"]
-    attributes  = ["${local.attributes}"]
-    tags_keys   = ["${keys(local.tags)}"]
-    tags_values = ["${values(local.tags)}"]
-    delimiter   = ["${local.delimiter}"]
-    label_order = ["${local.label_order_final_list}"]
+    name                = ["${local.name}"]
+    namespace           = ["${local.namespace}"]
+    environment         = ["${local.environment}"]
+    stage               = ["${local.stage}"]
+    attributes          = ["${local.attributes}"]
+    tags_keys           = ["${keys(local.tags)}"]
+    tags_values         = ["${values(local.tags)}"]
+    delimiter           = ["${local.delimiter}"]
+    label_order         = ["${local.label_order_final_list}"]
+    regex_replace_chars = ["${local.regex_replace_chars}"]
   }
   id_context = {
     name        = "${local.name}"