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-rw-r--r--bin/sh.l14
1 files changed, 11 insertions, 3 deletions
diff --git a/bin/sh.l b/bin/sh.l
index 9664b00..8f0f772 100644
--- a/bin/sh.l
+++ b/bin/sh.l
@@ -1,4 +1,4 @@
-/* Copyright (C) 2021  C. McEnroe <june@causal.agency>
+/* Copyright (C) 2021  June McEnroe <june@causal.agency>
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU Affero General Public License as published by
@@ -36,7 +36,7 @@ static int pop(void) {
 }
 %}
 
-%s Param Command Arith Backtick
+%s Param Command Arith Backtick Subshell
 %x DQuote HereDocDel HereDoc HereDocLit
 
 word [[:alnum:]_.-]+
@@ -51,7 +51,7 @@ reserved [!{}]|else|do|elif|for|done|fi|then|until|while|if|case|esac
 
 "\\". { return Escape; }
 
-<INITIAL,DQuote,HereDoc,Param,Command,Arith>{
+<INITIAL,DQuote,HereDoc,Param,Command,Arith,Subshell>{
 	"$"[*@#?$!0-9-] |
 	"$"[_[:alpha:][_[:alnum:]]* |
 	"${"[#]?{param}"}" {
@@ -73,6 +73,10 @@ reserved [!{}]|else|do|elif|for|done|fi|then|until|while|if|case|esac
 		BEGIN(push(Backtick));
 		return Subst;
 	}
+	"(" {
+		BEGIN(push(Subshell));
+		return Normal;
+	}
 }
 <Param>"}" |
 <Command>")" |
@@ -81,6 +85,10 @@ reserved [!{}]|else|do|elif|for|done|fi|then|until|while|if|case|esac
 	BEGIN(pop());
 	return Subst;
 }
+<Subshell>")" {
+	BEGIN(pop());
+	return Normal;
+}
 
 "\n" {
 	first = true;