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-rw-r--r--pygments/lexers/text.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/pygments/lexers/text.py b/pygments/lexers/text.py
index 733302bc..130ddba9 100644
--- a/pygments/lexers/text.py
+++ b/pygments/lexers/text.py
@@ -528,7 +528,7 @@ class ApacheConfLexer(RegexLexer):
(r'(#.*?)$', Comment),
(r'(<[^\s>]+)(?:(\s+)(.*?))?(>)',
bygroups(Name.Tag, Text, String, Name.Tag)),
- (r'([a-zA-Z][a-zA-Z0-9]*)(\s+)',
+ (r'([a-zA-Z][a-zA-Z0-9_]*)(\s+)',
bygroups(Name.Builtin, Text), 'value'),
(r'\.+', Text),
],