* emulation/pc-select.el (next-line-mark, next-line-nomark)

* emulation/pc-select.el (next-line-mark, next-line-nomark)
(previous-line-mark, previous-line-nomark): Wrap with-no-warnings
around uses of previous-line and next-line.

* diff.el (diff-old-file, diff-new-file, diff-extra-args): New
defvars.

* textmodes/css-mode.el (comment-continue):
* net/browse-url.el (url-handler-regexp):
* progmodes/idlw-help.el (idlwave-system-routines): Pacify
byte-compiler.