[324] Improve direct edit support for spaces, quotes, and special chars

Bug: eclipse-syson#324
Signed-off-by: Gwendal Daniel <gwendal.daniel@obeosoft.com>

CHANGELOG.adoc

@@ -19,6 +19,7 @@
 === Improvements
 
 - https://github.com/eclipse-syson/syson/issues/298[#298] [syson] Add root Namespace to SysON models and libraries
+- https://github.com/eclipse-syson/syson/issues/324[#324] [diagrams] Improve support for whitespaces, quotes, and special characters in direct edit
 
 === New features
 

backend/services/syson-services/src/main/generated/org/eclipse/syson/services/grammars/DirectEdit.interp

@@ -12,9 +12,7 @@ null
 '/'
 ','
 '::'
-null
-null
-null
+'::>'
 null
 null
 null
@@ -132,15 +130,13 @@ null
 null
 null
 null
+null
 WS
 Boolean
 Integer
 Real
-SingleQuotedString
 DoubleQuotedString
-BasicName
-BasicInitialCharacter
-BasicNameCharacter
+ANY
 ABOUT
 ABSTRACT
 ALIAS
@@ -257,4 +253,4 @@ name
 
 
 atn:
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