From f751225ea065d36ecaba5d1c28c27d98e57599b7 Mon Sep 17 00:00:00 2001
From: Michael Fellinger <michael.fellinger@iohk.io>
Date: Sat, 3 Jan 2026 00:21:46 +0100
Subject: [PATCH] fix another hash-in-string bug

---
 CHANGELOG.md        |  4 ++++
 src/tom.gleam       |  2 ++
 test/tom_test.gleam | 19 +++++++++++++++++++
 3 files changed, 25 insertions(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0798736..e4e0e96 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+## v2.0.1 - 2026-01-13
+
+- Fixed a bug where the '#' symbol in ''' strings would be treated like a comment
+
 ## v2.0.0 - 2025-05-31
 
 - Added [gleam_time](https://hexdocs.pm/gleam_time/index.html) as a dependency.
diff --git a/src/tom.gleam b/src/tom.gleam
index ecb73f0..7ce1325 100644
--- a/src/tom.gleam
+++ b/src/tom.gleam
@@ -709,6 +709,8 @@ fn drop_comments(input: Tokens, acc: Tokens, in_string: Bool) -> Tokens {
     ["\\", "\"", ..input] if in_string ->
       drop_comments(input, ["\"", "\\", ..acc], in_string)
     ["\"", ..input] -> drop_comments(input, ["\"", ..acc], !in_string)
+    ["'", "'", "'", ..input] ->
+      drop_comments(input, ["'", "'", "'", ..acc], !in_string)
     ["#", ..input] if in_string -> drop_comments(input, ["#", ..acc], in_string)
     ["#", ..input] if !in_string ->
       input
diff --git a/test/tom_test.gleam b/test/tom_test.gleam
index 47d6b95..dd1986e 100644
--- a/test/tom_test.gleam
+++ b/test/tom_test.gleam
@@ -508,6 +508,25 @@ pub fn parse_multi_line_single_quote_string_too_many_quotes_test() {
   |> should.equal(Error(tom.Unexpected("''''", "'''")))
 }
 
+pub fn parse_multi_line_literal_string_with_hash_test() {
+  let expected =
+    dict.from_list([
+      #(
+        "a",
+        tom.String(
+          "This string contains a #hash character\nand more text after it\n",
+        ),
+      ),
+    ])
+  "a = '''
+This string contains a #hash character
+and more text after it
+'''
+"
+  |> tom.parse
+  |> should.equal(Ok(expected))
+}
+
 pub fn parse_multi_line_string_escape_newline_test() {
   let expected =
     dict.from_list([