K 10
svn:author
V 5
pstef
K 8
svn:date
V 27
2018-08-15T18:19:45.539000Z
K 7
svn:log
V 200
indent(1): bug fix after r336333

The bug was that isalnum() is not exactly equivalent to previous code which
also allowed characters "$" and "_", so check for those explicitly.

Reported by:	tuexen@

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