2 files changed, 38 insertions, 0 deletions
diff --git a/test-cases/case2_lookahead/script.sh b/test-cases/case2_lookahead/script.sh
new file mode 100644
index 0000000..1a2226b
--- /dev/null
+++ b/test-cases/case2_lookahead/script.sh
@@ -0,0 +1,38 @@
+case foo {
+    f(?=o)oo {}
+    .* { echo fail 1 }
+}
+
+case foo {
+    fo(?=x)o { echo fail 2 }
+    .* { }
+}
+
+fun match {
+    set res = $($1 $2)
+    if [ $res != $3 ] {
+        echo "match $1 $2: expected $3, got $res"
+    }
+}
+
+fun x0 {
+    case $1 {
+        a(?=b). { echo yes }
+        .* { echo no }
+    }
+}
+match x0 aa no
+match x0 aaa no
+match x0 ab yes
+
+fun x1 {
+    case $1 {
+        a(?!x)x { echo yes }
+        .* { echo no }
+    }
+}
+match x1 a no
+match x1 aa no
+match x1 ax no
+match x1 axx no
+match x1 aax no
diff --git a/test-cases/case2_lookahead/stdout.txt b/test-cases/case2_lookahead/stdout.txt
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/test-cases/case2_lookahead/stdout.txt