Fix to way we find inputs that use special replica syntax with two open brakets

Author: Gareth Aneurin Tribello

PlumedToHTML/PlumedLexer.py

@@ -22,9 +22,9 @@ class PlumedLexer(RegexLexer):
             (r'(\w+)(=)(@\S+:)(__FILL__)', bygroups(Name.Attribute, Text, Name.Constant, Literal)), 
             # Find special replica syntax with brackets around replica command
             (r'(\w+)(=\{)(@\S+:)((?s)\{.*?\})(\})', bygroups(Name.Attribute, Text, Name.Constant, Generic, Text)),
+            # Find special repliica syntax with multiple brackets
+            (r'(\w+)(=)(@\S+:)((?s)\{\s*\{.*?\}\s*\})', bygroups(Name.Attribute, Text, Name.Constant, Generic)), 
             # Find special replica syntax with brackets
-            (r'(\w+)(=)(@replicas:)(\{[\S\s\n]+\})', bygroups(Name.Attribute, Text, Name.Constant, Generic)),
-            # Find mda syntax with brackets
             (r'(\w+)(=)(@\S+:)((?s)\{.*?\})', bygroups(Name.Attribute, Text, Name.Constant, Generic)),  
             # Find special replica syntax without brackets
             (r'(\w+)(=)(@\S+:)(\S+\b)', bygroups(Name.Attribute, Text, Name.Constant, Generic)),