fix bug with sscanf on negative floats

2 files changed, 7 insertions, 4 deletions

diff --git a/src/library.js b/src/library.js
index 4096ba75..6385507c 100644
--- a/src/library.js
+++ b/src/library.js
@@ -2177,7 +2177,7 @@ LibraryManager.library = {
   // ==========================================================================
 
   _isFloat: function(text) {
-    return !!(/^[+]?[0-9]*\.?[0-9]+([eE][+-]?[0-9]+)?$/.exec(text));
+    return !!(/^[+-]?[0-9]*\.?[0-9]+([eE][+-]?[0-9]+)?$/.exec(text));
   },
 
   // TODO: Document.
diff --git a/tests/runner.py b/tests/runner.py
index a1fa8690..044e5cf2 100755
--- a/tests/runner.py
+++ b/tests/runner.py
@@ -3289,13 +3289,16 @@ at function.:blag
 
           printf("%f, %f\n", atof("1.234567"), atof("cheez"));
 
+          float a = -1;
+          sscanf("-3.03", "%f", &a);
+          printf("%.4f\n", a);
+
           return 0;
         }
         '''
-      self.do_run(src, 'en-us : 2*en-r : 99*en : 3*1.234567, 0.000000',
-                  output_nicerizer = lambda x: x.replace('\n', '*'))
+      self.do_run(src, 'en-us : 2\nen-r : 99\nen : 3\n1.234567, 0.000000\n-3.0300')
 
-      # Part 2: doubles (issue 148)
+      # Part 2: doubles
       if Settings.USE_TYPED_ARRAYS == 2:
         for ftype in ['float', 'double']:
           src = r'''