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nano/syntax/texinfo.nanorc
Benno Schulenberg badf3edc55 syntax: texinfo: colorize the special @-plus-punctuation commands too
Also, allow an @} and another @command{} within a pair of braces,
colorize only the valid @-commands with uppercase in their names,
unbold enclosed command arguments, colorize the directory entries
for the manual, and properly colorize also the comments that use
the full @comment command.

Reference:
  https://www.gnu.org/software/texinfo/manual/texinfo/html_node/Command-List.html

Testing was done with:
  info texinfo @-C "Command List" --output=list
  sed -i -e "s/^'//" -e "s/'$//" list
  nano list -Ytexinfo
2021-10-16 17:03:45 +02:00

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## Syntax highlighting for Texinfo files.
## Original author: Benno Schulenberg
## License: GPL version 3 or newer
syntax texinfo "\.texi$"
header "^\\input texinfo"
magic "Texinfo source"
comment "@c "
# How the manual gets listed in the directory node.
color purple start="^@direntry" end="^@end direntry"
# Command arguments, trailing and enclosed.
color cyan "^@[a-z]+[[:space:]]+.*"
color lightmagenta "@([a-z]+|,|H|U)\{([^}]|@\}|@[a-z]+\{[^}]*\})*\}"
# Commands themselves.
color yellow "@([a-z]+\{?|[,HU]\{|(AA|AE|DH|L|OE?|(La)?TeX|TH)\{)|\}"
color pink "@[!"'&*./:=?@\^`{}~-]"
# Special separator for headings and footings.
color mint "@\|"
# Menu items.
color brightred "^\*[[:space:]]+.*::.*"
# Comments.
color green "@c(omment)?[[:space:]]+.*"
# Trailing whitespace.
color ,green "[[:space:]]+$"