From a194416d100e4229b98573bd1cff7a7397d20585 Mon Sep 17 00:00:00 2001
From: Lukas Krickl <lukas@krickl.dev>
Date: Thu, 9 Nov 2023 07:06:18 +0100
Subject: [PATCH] WIP: macro expand

---
 src/test.c | 6 +++---
 src/ulas.c | 9 ++++++---
 2 files changed, 9 insertions(+), 6 deletions(-)

diff --git a/src/test.c b/src/test.c
index 5975de7..7bd40a2 100644
--- a/src/test.c
+++ b/src/test.c
@@ -31,9 +31,9 @@
 void test_tok(void) {
   TESTBEGIN("tok");
 
-  assert_tok(
-      "  test  tokens   with   line / * + - , ;",
-      {"test", "tokens", "with", "line", "/", "*", "+", "-", ",", ";", NULL});
+  assert_tok("  test  tokens   with   line / * + - , ; \\1",
+             {"test", "tokens", "with", "line", "/", "*", "+", "-", ",", ";",
+              "\\1", NULL});
 
   TESTEND("tok");
 }
diff --git a/src/ulas.c b/src/ulas.c
index 51a92ed..26545ef 100644
--- a/src/ulas.c
+++ b/src/ulas.c
@@ -94,13 +94,16 @@ int ulas_tok(struct ulas_str *dst, const char **out_line, size_t n) {
   case '-':
   case '*':
   case '/':
-  case '\\':
   case ULAS_TOK_COMMENT:
     // single char tokens
     dst->buf[write++] = line[i++];
     break;
-    // consume rest of the line but do not write anything to tokens
-    i = (int)n;
+  case '\\':
+    // make sure we have enough space in buffer
+    ulas_strensr(dst, write + 2);
+    // escape char tokens
+    dst->buf[write++] = line[i++];
+    dst->buf[write++] = line[i++];
     break;
   default:
     while (weld_tokcond) {
-- 
2.30.2