verilog: add void to the parameter list of skipToEOL

An empty parameter list is warned by sparse.
This patch suppress it.

Signed-off-by: Masatake YAMATO <yamato@redhat.com>
lxcmd: add static modifier for file local constant

static modifier is added to PseudoTagPrefix which
is a constant used only in lxcmd.c.
This is reported by sparse.

Signed-off-by: Masatake YAMATO <yamato@redhat.com>
lxcmd: Use NULL for initialize an pointer variable

Suppress a warning reported by sparse.

Signed-off-by: Masatake YAMATO <yamato@redhat.com>
ocaml, readtags: add static modifier for file local variables and constants

static modifiers are added to variables and constants
they are used only in a file.

This pach suppress warnings reported by sparse.

Signed-off-by: Masatake YAMATO <yamato@redhat.com>
ruby: Use NULL for initialize an pointer variable

Suppress a warning reported by sparse.

Signed-off-by: Masatake YAMATO <yamato@redhat.com>
travis, units: show diffs when test cases are on travis-ci

TRAVIS= macro is added to testing.mak.
--show-diff-output is added to units-run.

Signed-off-by: Masatake YAMATO <yamato@redhat.com>
Fix modelines used in tests, so Vim would parse them
doc: redact modeline section
Improve determineVimFileType: do not require "set", search backwards

 - "set " or "se " is not required with the (newer) modelines
 - prefer later entries in case of multiple settings, by using a new
   strrstr function
Simplify `strrstr` and `strstr`

Thanks @vhda.
Ref: https://github.com/fishman/ctags/pull/125#issuecomment-63169399