Merge branch 'fix_indent' into 'master'

Fix indent if line starts with &

See merge request scemama/irpf90!23

src/irpf90_indent.py

@@ -119,10 +119,12 @@ class indent(object):
     return l.strip().ljust(n) + ' :: '+ r.strip()
 
   def format_continuation(self,string,n):
-    buffer = string.split('&')
+    buffer = string.split('&', 1)
     if len(buffer) == 1:
       l = buffer[0]
       return l
+    elif buffer[0].strip() == "":
+      return self.format_continuation(buffer[1], n)
     else:
       l, r = buffer
     return l.strip().ljust(69-len(n)) + '&'+ r.strip()