From 6b9699f0f2e48961af25843eea9b694d043bd352 Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Mon, 30 Sep 2019 12:53:29 +0200
Subject: Reserve `:` in `case` pattern expression for future match extraction
 support

---
 libbuild2/lexer.cxx | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

(limited to 'libbuild2/lexer.cxx')

diff --git a/libbuild2/lexer.cxx b/libbuild2/lexer.cxx
index 17b0c7d..61d7fbf 100644
--- a/libbuild2/lexer.cxx
+++ b/libbuild2/lexer.cxx
@@ -63,8 +63,8 @@ namespace build2
       }
     case lexer_mode::case_patterns:
       {
-        s1 = " $(){}[],|#\t\n";
-        s2 = "             ";
+        s1 = " $(){}[],|:#\t\n";
+        s2 = "              ";
         break;
       }
     case lexer_mode::attribute:
@@ -201,9 +201,10 @@ namespace build2
     // The following characters are special in the normal, variable, and
     // switch_expressions modes.
     //
-    if (m == lexer_mode::normal   ||
-        m == lexer_mode::variable ||
-        m == lexer_mode::switch_expressions)
+    if (m == lexer_mode::normal             ||
+        m == lexer_mode::variable           ||
+        m == lexer_mode::switch_expressions ||
+        m == lexer_mode::case_patterns)
     {
       switch (c)
       {
-- 
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