Improve detection of keywords surrounded by dots
Improve detection of keywords surrounded by dots

Return the keyword without surrounding dots or numbers. Also altered
help.json file so entries previously enclosed in dots are plain
keywords. E.g. the ".AND." help key is now just "AND". This reduces
the need to handle code formatting variations like:  "$ARG5.GT.400" vs
"$ARG5 .GT. 400"

blandfbt/PPCL,semiamaurotic/PPCL