In IDL, a newline character terminates a statement unless preceded by a
‘$’. If you would like to start a continuation line, use
M-<RET>, which calls the command
It inserts the continuation character ‘$’, terminates the line and
indents the new line. The command M-<RET> can also be invoked
inside a string to split it at that point, in which case the ‘+’
concatenation operator is used.
When filling comment paragraphs, IDLWAVE overloads the normal filling
functions and uses a function which creates the hanging paragraphs
customary in IDL routine headers. When
auto-fill-mode is turned
on (toggle with C-c C-a), comments will be auto-filled. If the
first line of a paragraph contains a match for
idlwave-hang-indent-regexp (a dash-space by default), subsequent
lines are positioned to line up after it, as in the following example.
;================================= ; x - an array containing ; lots of interesting numbers. ; ; y - another variable where ; a hanging paragraph is used ; to describe it. ;=================================
You can also refill a comment at any time paragraph with M-q. Comment delimiting lines as in the above example, consisting of one or more ‘;’ followed by one or more of the characters ‘+=-_*’, are kept in place, as is.
nilmeans auto fill will only operate on comment lines.
nilmeans auto fill will split strings with the IDL ‘+’ operator.
idlwave-split-linewill split strings with ‘+’.
nilmeans comment paragraphs are indented under the hanging indent given by
idlwave-hang-indent-regexpmatch in the first line of the paragraph.
Regular expression matching the position of the hanging indent in the first line of a comment paragraph.