Don't treat lone _ as a digit

MarSoft · MarSoft · commit 12d0d60e44c9 · 2017-02-11T20:04:35.000+03:00
diff --git a/syntax/python.vim b/syntax/python.vim
@@ -251,13 +251,13 @@ endif
 " ===========
 
     syn match   pythonHexError  "\<0[xX][0-9a-fA-F_]*[g-zG-Z][0-9a-fA-F_]*[lL]\=\>" display
-    syn match   pythonHexNumber "\<0[xX][0-9a-fA-F_]\+[lL]\=\>" display
-    syn match   pythonOctNumber "\<0[oO][0-7_]\+[lL]\=\>" display
-    syn match   pythonBinNumber "\<0[bB][01_]\+[lL]\=\>" display
-    syn match   pythonNumber    "\<[0-9_]\+[lLjJ]\=\>" display
-    syn match   pythonFloat "\.[0-9_]\+\([eE][+-]\=[0-9_]\+\)\=[jJ]\=\>" display
-    syn match   pythonFloat "\<[0-9_]\+[eE][+-]\=[0-9_]\+[jJ]\=\>" display
-    syn match   pythonFloat "\<[0-9_]\+\.[0-9_]*\([eE][+-]\=[0-9_]\+\)\=[jJ]\=" display
+    syn match   pythonHexNumber "\<0[xX][0-9a-fA-F_]*[0-9a-fA-F][0-9a-fA-F_]*[lL]\=\>" display
+    syn match   pythonOctNumber "\<0[oO][0-7_]*[0-7][0-7_]*[lL]\=\>" display
+    syn match   pythonBinNumber "\<0[bB][01_]*[01][01_]*[lL]\=\>" display
+    syn match   pythonNumber    "\<[0-9_]*[0-9][0-9_]*[lLjJ]\=\>" display
+    syn match   pythonFloat "\.[0-9_]*[0-9][0-9_]*\([eE][+-]\=[0-9_]*[0-9][0-9_]*\)\=[jJ]\=\>" display
+    syn match   pythonFloat "\<[0-9_]*[0-9][0-9_]*[eE][+-]\=[0-9_]\+[jJ]\=\>" display
+    syn match   pythonFloat "\<[0-9_]*[0-9][0-9_]*\.[0-9_]*\([eE][+-]\=[0-9_]*[0-9][0-9_]*\)\=[jJ]\=" display
     syn match   pythonOctError  "\<0[oO]\=[0-7_]*[8-9][0-9_]*[lL]\=\>" display
     syn match   pythonBinError  "\<0[bB][01_]*[2-9][0-9_]*[lL]\=\>" display
 
