From a094b8f43d7401b01e68e3000b3fea5bb058b19b Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Tue, 30 Aug 2016 16:14:47 +0200
Subject: Don't treat trailing dot as part of variable name

So we can write $major.$minor
---
 build2/lexer.cxx | 11 +++++++++++
 1 file changed, 11 insertions(+)

(limited to 'build2/lexer.cxx')

diff --git a/build2/lexer.cxx b/build2/lexer.cxx
index 8124765..a5a4a3a 100644
--- a/build2/lexer.cxx
+++ b/build2/lexer.cxx
@@ -280,6 +280,17 @@ namespace build2
             done = true;
             break;
           }
+        case '.':
+          {
+            // Normally '.' is part of the variable (namespace separator)
+            // unless it is trailing (think $major.$minor).
+            //
+            get ();
+            xchar p (peek ());
+            done = eos (p) || !(alnum (p) ||  p == '_');
+            unget (c);
+            break;
+          }
         }
 
         if (done)
-- 
cgit v1.1