From 068cb6d35bee7b1a2aac6987a52d282f4950ad32 Mon Sep 17 00:00:00 2001
From: Alek Ratzloff <alekratz@gmail.com>
Date: Thu, 22 Sep 2022 10:21:47 -0700
Subject: [PATCH] Fix escapes

If you want to include a literal ${macro call}, you can preface it with
a backslash like \${macro call}.

Signed-off-by: Alek Ratzloff <alekratz@gmail.com>
---
 markup.py | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/markup.py b/markup.py
index 6fe22c2..f6dbbbb 100755
--- a/markup.py
+++ b/markup.py
@@ -96,10 +96,14 @@ class MarkupParser:
 
     def parse(self):
         while self.c:
-            if self.c in r"\$":
+            if self.is_match("${"):
                 mac = self.parse_macro()
                 self.parts += [mac]
             else:
+                # skip past the escape
+                if self.is_match(r"\${"):
+                    self.adv(3)
+                    self.parts += [MarkupRaw("${")]
                 raw = self.parse_raw()
                 self.parts += [raw]