4 files changed, 72 insertions, 32 deletions
diff --git a/test-cases/case2_positive_lookahead/script.sh b/test-cases/case2_positive_lookahead/script.sh
new file mode 100644
index 0000000..e24cbcb
--- /dev/null
+++ b/test-cases/case2_positive_lookahead/script.sh
@@ -0,0 +1,62 @@
+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 {
+        x(?=foo)(?=...bar).* { echo yes }
+        .* { echo no }
+    }
+}
+match x1 xfoobar yes
+match x1 xfoobar_some_more_stuff yes
+match x1 x___bar no
+match x1 xfoo___ no
+match x1 xfoo    no
+
+fun x2 {
+    case $1 {
+        (?=foo).*(?=bar).* { echo yes }
+        .* { echo no }
+    }
+}
+match x2 foobar yes
+match x2 foobarbaz yes
+match x2 barfoo no
+match x2 foobaz no
+match x3 foo_stuff_bar yes
+match x3 foo_stuff_bar_more_stuff yes
+
+fun x3 {
+    case $1 {
+        (?=abc).*(?=cde).* { echo yes }
+        .* { echo no }
+    }
+}
+match x3 abc_cde yes
+match x3 abcde yes
+match x3 abcdef yes
+match x3 abde no
diff --git a/test-cases/case2_lookahead/stdout.txt b/test-cases/case2_positive_lookahead/stdout.txt
index e69de29..e69de29 100644
--- a/test-cases/case2_lookahead/stdout.txt
+++ b/test-cases/case2_positive_lookahead/stdout.txt
diff --git a/test-cases/case2_lookahead/script.sh b/test-cases/case3_negative_lookahead/script.sh
index 891441b..3246f74 100644
--- a/test-cases/case2_lookahead/script.sh
+++ b/test-cases/case3_negative_lookahead/script.sh
@@ -1,13 +1,3 @@
-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 ] {
@@ -15,16 +5,6 @@ fun match {
     }
 }
 
-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 }
@@ -37,18 +17,6 @@ match x1 ax no
 match x1 axx no
 match x1 aax no
 
-fun x2 {
-    case $1 {
-        x(?=foo)(?=...bar).* { echo yes }
-        .* { echo no }
-    }
-}
-match x2 xfoobar yes
-match x2 xfoobar_some_more_stuff yes
-match x2 x___bar no
-match x2 xfoo___ no
-match x2 xfoo    no
-
 fun x3 {
     case $1 {
         x(?!(a|b)).* { echo yes }
@@ -63,3 +31,13 @@ match x3 xbx no
 match x3 xxa yes
 match x3 xxb yes
 match x3 xfoobar yes
+
+fun x4 {
+    case $1 {
+        x(?!a).* { echo yes }
+        .* { echo no }
+    }
+}
+match x4 x yes
+match x4 xa no
+match x4 xy no
diff --git a/test-cases/case3_negative_lookahead/stdout.txt b/test-cases/case3_negative_lookahead/stdout.txt
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/test-cases/case3_negative_lookahead/stdout.txt