Simplify charclasses in the remaining modules

1 files changed, 4 insertions, 4 deletions

diff --git a/pygments/lexers/nit.py b/pygments/lexers/nit.py
index e0947447..5d4864db 100644
--- a/pygments/lexers/nit.py
+++ b/pygments/lexers/nit.py
@@ -37,9 +37,9 @@ class NitLexer(RegexLexer):
                 'else', 'while', 'loop', 'for', 'in', 'and', 'or', 'not',
                 'implies', 'return', 'continue', 'break', 'abort', 'assert',
                 'new', 'is', 'once', 'super', 'self', 'true', 'false', 'nullable',
-                'null', 'as', 'isset', 'label', '__debug__'), suffix=r'(?=[\r\n\t\( ])'),
+                'null', 'as', 'isset', 'label', '__debug__'), suffix=r'(?=[\r\n\t( ])'),
              Keyword),
-            (r'[A-Z][A-Za-z0-9_]*', Name.Class),
+            (r'[A-Z]\w*', Name.Class),
             (r'"""(([^\'\\]|\\.)|\\r|\\n)*((\{\{?)?(""?\{\{?)*""""*)', String),  # Simple long string
             (r'\'\'\'(((\\.|[^\'\\])|\\r|\\n)|\'((\\.|[^\'\\])|\\r|\\n)|'
              r'\'\'((\\.|[^\'\\])|\\r|\\n))*\'\'\'', String),  # Simple long string alt
@@ -54,8 +54,8 @@ class NitLexer(RegexLexer):
             (r'[0-9]+', Number.Integer),
             (r'[0-9]*.[0-9]+', Number.Float),
             (r'0(x|X)[0-9A-Fa-f]+', Number.Hex),
-            (r'[a-z][A-Za-z0-9_]*', Name),
-            (r'_[A-Za-z0-9_]+', Name.Variable.Instance),
+            (r'[a-z]\w*', Name),
+            (r'_\w+', Name.Variable.Instance),
             (r'==|!=|<==>|>=|>>|>|<=|<<|<|\+|-|=|/|\*|%|\+=|-=|!|@', Operator),
             (r'\(|\)|\[|\]|,|\.\.\.|\.\.|\.|::|:', Punctuation),
             (r'`\{[^`]*`\}', Text),  # Extern blocks won't be Lexed by Nit