diff --git a/Terraform.sublime-syntax b/Terraform.sublime-syntax
index 4950127..02ca3ea 100644
--- a/Terraform.sublime-syntax
+++ b/Terraform.sublime-syntax
@@ -74,8 +74,38 @@ variables:
 
   # Built-In Functions
   #
-  # https://www.terraform.io/docs/language/functions/index.html
-  predeclared_funcs: abs|ceil|floor|log|max|min|pow|signum|chomp|format|formatlist|indent|join|lower|regex|regexall|replace|split|strrev|substr|title|trimspace|upper|chunklist|coalesce|coalescelist|compact|concat|contains|distinct|element|flatten|index|keys|length|list|lookup|map|matchkeys|merge|range|reverse|setintersection|setproduct|setunion|slice|sort|transpose|values|zipmap|base64decode|base64encode|base64gzip|csvdecode|jsondecode|jsonencode|urlencode|yamldecode|yamlencode|abspath|dirname|pathexpand|basename|file|fileexists|fileset|filebase64|templatefile|formatdate|timeadd|timestamp|base64sha256|base64sha512|bcrypt|filebase64sha256|filebase64sha512|filemd5|filemd1|filesha256|filesha512|md5|rsadecrypt|sha1|sha256|sha512|uuid|uuidv5|cidrhost|cidrnetmask|cidrsubnet|tobool|tolist|tomap|tonumber|toset|tostring
+  # https://developer.hashicorp.com/terraform/language/functions
+  predeclared_funcs: |-
+    \b(?x:
+      # numbers
+       abs|ceil|floor|log|max|min|parseint|pow|signum
+      # string
+      |chomp|endswith|format|formatlist|indent|join|lower|regex|regexall|replace
+      |split|startswith|strcontains|strrev|substr
+      |templatestring|title|trim|trimprefix|trimsuffix|trimspace|upper
+      # collection
+      |alltrue|anytrue|chunklist|coalesce|coalescelist|compact|concat|contains
+      |distinct|element|flatten|index|keys|length|list|lookup
+      |map|matchkeys|merge|one|range|reverse
+      |setintersection|setproduct|setsubtract|setunion|slice|sort|sum
+      |transpose|values|zipmap
+      # encoding
+      |base64decode|base64encode|base64gzip|csvdecode|jsondecode|jsonencode|textdecodebase64|textencodebase64|urlencode|yamldecode|yamlencode
+      # filesystem
+      |abspath|dirname|pathexpand|basename|file|fileexists|fileset|filebase64|templatefile
+      # date and time
+      |formatdate|plantimestamp|timeadd|timecmp|timestamp
+      # hash and crypto
+      |base64sha256|base64sha512|bcrypt|filebase64sha256|filebase64sha512|filemd5|filesha1|filesha256|filesha512|md5|rsadecrypt|sha1|sha256|sha512|uuid|uuidv5
+      # ip network
+      |cidrhost|cidrnetmask|cidrsubnet|cidrsubnets
+      # type conversion
+      |can|issensitive|nonsensitive|sensitive|tobool|tolist|tomap|tonumber|toset|tostring|try|type
+      # terraform-specific
+      |provider::terraform::(?:encode_tfvars|decode_tfvars|encode_expr)
+      # deprecated/old
+      |filemd1
+    )\b
 
 contexts:
   main:
@@ -479,12 +509,12 @@ contexts:
   # https://github.com/hashicorp/hcl2/blob/master/hcl/hclsyntax/spec.md#functions-and-function-calls
   # https://www.terraform.io/docs/language/expressions/function-calls.html
   functions:
-    - match: (({{predeclared_funcs}})|\b({{identifer}})\b)(\()
+    - match: (?:({{predeclared_funcs}})|\b({{identifer}})\b)(\()
       comment: Built-in function calls
       captures:
-        2: support.function.builtin.terraform
-        3: variable.function.terraform
-        4: punctuation.section.parens.begin.terraform
+        1: support.function.builtin.terraform
+        2: variable.function.terraform
+        3: punctuation.section.parens.begin.terraform
       push:
         - meta_scope: meta.function-call.terraform
         - match: \)
diff --git a/syntax_test_terraform.tf b/syntax_test_terraform.tf
index 855c676..c3cad27 100644
--- a/syntax_test_terraform.tf
+++ b/syntax_test_terraform.tf
@@ -2430,6 +2430,15 @@
 #               ^^^^^^ meta.function-call.terraform string.quoted.double.terraform
 #                     ^ meta.function-call.terraform punctuation.section.parens.end.terraform
 
+
+    provider::terraform::encode_tfvars({
+#   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ meta.function-call.terraform
+#   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ support.function.builtin.terraform
+#                                     ^ punctuation.section.parens.begin.terraform
+#                                      ^ meta.braces.terraform punctuation.section.braces.begin.terraform
+      example = "Hello!"
+    })
+
 /////////////////////////////////////////////////////////////////////
 // TUPLE FOR-EXPRESSIONS
 /////////////////////////////////////////////////////////////////////