nano/syntax/groff.nanorc
Benno Schulenberg 544351f3be syntaxes: replace [[:space:]] with [[:blank:]] to exclude carriage return
In many places a carriage return is not valid whitespace and should
thus not be colored as such.  In some of these places a vertical tab
or form feed is maybe valid whitespace, but it would be ugly or even
wrong to color them because they are not part of the subsequent
comment or keyword.

This fixes https://savannah.gnu.org/bugs/?60456.
2021-04-27 11:18:41 +02:00

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## Syntax highlighting for groff.
syntax groff "(/tmac\.[^/]+$|\.(m[ems]|rof|tmac)$)"
comment ".\""
# The argument of .ds or .nr
color cyan "^\.(ds|nr) [^[:space:]]*"
# Single-character escapes
color brightmagenta "\\."
# The argument of \f or \s in the same color
color brightmagenta "\\f(.|\(..)" "\\s(\+|\-)?[0-9]"
# Newlines
color cyan "\\(\\)?n(.|\(..)"
color cyan start="\\(\\)?n\[" end="]"
# Requests
color brightgreen "^\.[[:blank:]]*[^[:space:]]*"
# Comments
color yellow "^\.\\".*"
# Strings
color green "\\(\\)?\*(.|\(..)"
color green start="\\(\\)?\*\[" end="]"
# Characters
color brightred "\\\(.."
color brightred start="\\\[" end="]"
# Macro arguments
color brightcyan "\\\\\$[1-9]"