Support special escape sequences in Terraform

rouge-ruby · Sep 17, 2024 · eebba7c · eebba7c
1 parent 173ec77
commit eebba7c
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Showing 2 changed files with 10 additions and 4 deletions.
diff --git a/lib/rouge/lexers/terraform.rb b/lib/rouge/lexers/terraform.rb
@@ -39,14 +39,14 @@ def self.builtins
 
       state :strings do
         rule %r/\\./, Str::Escape
-        rule %r/\$\{/ do
-          token Keyword
+        rule %r{(\$[\$]*|%[%]*)(\{)} do |m|
+          groups Str::Escape, Punctuation
           push :interpolation
         end
       end
 
       state :dq do
-        rule %r/[^\\"\$]+/, Str::Double
+        rule %r/[^\\"\$%]+/, Str::Double
         mixin :strings
         rule %r/"/, Str::Double, :pop!
       end
@@ -66,7 +66,7 @@ def self.builtins
 
       state :interpolation do
         rule %r/\}/ do
-          token Keyword
+          token Punctuation
           pop!
         end
 

diff --git a/spec/visual/samples/terraform b/spec/visual/samples/terraform
@@ -84,3 +84,9 @@ resource "aws_subnet" "main" {
 resource "aws_cloudfront_distribution" "s3_distribution" {
   aliases = ["www.${replace(var.domain_name, "/\\.$/", "")}"]
 }
+
+## Special escape sequences that do not use backslashes
+locals {
+  demo_dollars_1 = "$${local.demo}"
+  demo_dollars_2 = "%%{for i in items}"
+}