An extensible POSIX shellscript for commenting text, written for use with vi(1). cmt will automatically comment or uncomment based on the first line it reads and the options passed.
Shell-style comments (the default)
$ echo 'foo bar' | cmt
# foo bar
$ printf '%s\n' foo bar | cmt
# foo
# bar
C-style comments
$ echo 'foo bar' | cmt -c
/* foo bar */
$ printf '%s\n' foo bar | cmt -C
/*
* foo
* bar
*/
Commented text will be uncommented:
$ echo foo | cmt | cmt
foo
$ cat c-style.txt
/*
* foo
* bar
*/
$ cmt -C c-style.txt
foo
bar
Indentation is preserved when commenting indented blocks:
E.g. File contents:
main ()
{
trap 'test -t 1 && printf \\n' EXIT
if test $# -eq 0
then
encode_stream
return
fi
while test $# -gt 0
do
if test -f "$1"
then
encode_stream <"$1"
else
encode_string "$1"
fi
shift
done
}
Ex-command :/while/;/done/!cmt
main ()
{
trap 'test -t 1 && printf \\n' EXIT
if test $# -eq 0
then
encode_stream
return
fi
# while test $# -gt 0
# do
# if test -f "$1"
# then
# encode_stream <"$1"
# else
# encode_string "$1"
# fi
# shift
# done
}
cmt can also reformat comments with the -f option:
Sample code with a very long comment:
# Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book.
def my_func(foo, bar):
that = do.this(thing)
return that
Ex-command :/^# Lorem/!cmt -f
# Lorem Ipsum is simply dummy text of the printing and typesetting
# industry. Lorem Ipsum has been the industry's standard dummy text ever since
# the 1500s, when an unknown printer took a galley of type and scrambled it
# to make a type specimen book.
def my_func(foo, bar):
that = do.this(thing)
return that
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