bug#25824: 25.1; bugs about display specfications

[ynyaaa]

I found 4 bugs about display specifications.

------------------------------------------------------------
(1) raise display specification may be affected by height specification.

This form displays two X's on the same height.

(insert "A"
        (propertize "X" 'display '((raise 1) (height 1)))
        (propertize "X" 'display '((raise 1) (height 2))))

But the form below displays second X heigher than first X.
The order in the display property is swapped.

(insert "A"
        (propertize "X" 'display '((height 1) (raise 1)))
        (propertize "X" 'display '((height 2) (raise 1))))

------------------------------------------------------------
(2) height display specification may not be applied to STRING specification.

This form displays a large string.

(insert (propertize "X" 'display '((height 2) "TEST")))

But the form below displays a normal size string.

(insert (propertize "X" 'display '("TEST" (height 2))))

------------------------------------------------------------
(3) raise display specification is not applied to STRING specification.

This form displays strings on the base line.

(insert (propertize "X" 'display '((raise 1) "TEST1"))
        (propertize "X" 'display '("TEST2" (raise 1))))

------------------------------------------------------------
(4) raise display specification may display needless space.

This form displays needless space over A,
as if raise specification is not specified.

(insert "A" (propertize "X" 'display '((raise -1) (height 2))))



In GNU Emacs 25.1.1 (i686-w64-mingw32)
 of 2016-09-18 built on LAPHROAIG
Windowing system distributor 'Microsoft Corp.', version 6.0.6002
Configured using:
 'configure --host=i686-w64-mingw32 --without-dbus
 --without-compress-install CFLAGS=-static'

Configured features:
XPM JPEG TIFF GIF PNG RSVG SOUND NOTIFY ACL GNUTLS LIBXML2 ZLIB
TOOLKIT_SCROLL_BARS

Important settings:
  value of $LANG: JPN
  locale-coding-system: cp932

Major mode: Lisp Interaction

Minor modes in effect:
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  global-eldoc-mode: t
  electric-indent-mode: t
  mouse-wheel-mode: t
  tool-bar-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  blink-cursor-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  line-number-mode: t
  transient-mark-mode: t

Recent messages:

Load-path shadows:
None found.

Features:
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sha1 md5 base64 format env code-pages mule custom widget
hashtable-print-readable backquote w32notify w32 multi-tty
make-network-process emacs)

Memory information:
((conses 8 97029 6894)
 (symbols 32 19796 0)
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 (strings 16 16516 4085)
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