[elpa] externals/auctex 01dc048 78/80: Change default for new Ghostscript

[Tassilo Horn]

branch: externals/auctex
commit 01dc048dedcb5e13152c9439612c817671aa560e
Author: Ikumi Keita <address@hidden>
Commit: Ikumi Keita <address@hidden>

    Change default for new Ghostscript
    
    * preview.el.in (preview-pdf-color-adjust-method): Change the default
    value to t and adjust doc string.
    * doc/preview-problems.texi (No images are displayed with gs 9.27 and
    earlier): Adjust its contents in line with the above change and change
    the title from "... newer".
---
 doc/preview-problems.texi | 29 ++++++++++++++---------------
 preview.el.in             |  7 ++-----
 2 files changed, 16 insertions(+), 20 deletions(-)

diff --git a/doc/preview-problems.texi b/doc/preview-problems.texi
index e10fdd7..264e14c 100644
--- a/doc/preview-problems.texi
+++ b/doc/preview-problems.texi
@@ -19,7 +19,7 @@ newer versions of the problematic software or by simple 
patches.
 * Too small bounding boxes::    
 * x-symbol interoperation::     
 * Middle-clicks paste instead of toggling::  
-* No images are displayed with gs 9.27 and newer::
+* No images are displayed with gs 9.27 and earlier::
 @end menu
 
 If you find something not mentioned here, please send a bug report using
@@ -139,8 +139,8 @@ search with @kbd{@key{RET}} before toggling and resume with 
@kbd{C-s
 C-s} or similar afterwards.  Since previews over the current match will
 auto-open, anyway, this should not be much of a problem in practice.
 
-@node No images are displayed with gs 9.27 and newer
-@section No images are displayed with gs 9.27 and newer
+@node No images are displayed with gs 9.27 and earlier
+@section No images are displayed with gs 9.27 and earlier
 
 @previewlatex{} tries to adjust the foreground and background colors of
 generated images to those of Emacs.  Unfortunately, incompatible changes
@@ -148,22 +148,21 @@ introduced in Ghostscript 9.27 breaks the traditional 
method partially,
 and @previewlatex{} can display no images under certain circumstances.
 
 A new method implemented alternatively works only with Ghostscript >
-9.27, so is disabled by default.  If you are using those new
-Ghostscript, customize the option
-@code{preview-pdf-adjust-color-method}.
+9.27.  If you are using Ghostscript 9.27 or earlier, customize the
+option @code{preview-pdf-adjust-color-method}.
 
 @defopt preview-pdf-adjust-color-method
 Method to adjust colors of images generated from @acronym{PDF}.  It is
 not consulted when the @LaTeX{} command produces @acronym{DVI} files.
 
-When the option is @code{t}, @previewlatex{} adjusts the FG and BG colors
-of the generated images by the new method.  This method requires that
-Ghostscript has working @code{DELAYBIND} feature, thus is invalid with
-gs 9.27 (and possibly < 9.27).
+When the option is @code{t} (default), @previewlatex{} adjusts the FG
+and BG colors of the generated images by the new method.  This method
+requires that Ghostscript has working @code{DELAYBIND} feature, thus is
+invalid with gs 9.27 (and possibly < 9.27).
 
-When it is @code{compatible} (default), @previewlatex{} uses traditional
-method.  This option is provided for backward compatibility with older
-gs.  See the below explanation for detail.
+When it is @code{compatible}, @previewlatex{} uses traditional method.
+This option is provided for backward compatibility with older gs.  See
+the below explanation for detail.
 
 When @code{nil}, no adjustment is done and ``black on white'' image is
 generated regardless of Emacs color.  This is provided for fallback for
@@ -191,6 +190,6 @@ written in the image although they may not match with your 
Emacs color
 well.
 @end enumerate
 
-The default value will be changed to @code{t} after Ghostscript 9.28 is
-released.
+The default value used to be @code{compatible} for short period before
+Ghostscript 9.50 was released but now is @code{t}.
 @end defopt
diff --git a/preview.el.in b/preview.el.in
index 03e1d9b..6699387 100644
--- a/preview.el.in
+++ b/preview.el.in
@@ -602,7 +602,7 @@ tag in the mode line."
       (setq preview-error-condition nil
            compilation-in-progress (delq process compilation-in-progress)))))
 
-(defcustom preview-pdf-color-adjust-method 'compatible
+(defcustom preview-pdf-color-adjust-method t
   "Method to adjust colors of images generated from PDF.
 It is not consulted when the latex command produces DVI files.
 
@@ -638,10 +638,7 @@ that case.
 - Choose the value nil, which forces plain \"black on white\"
 appearance for the generated image.  You can at least read what
 are written in the image although they may not match with your
-Emacs color well.
-
-The default value will be changed to t after Ghostscript 9.28 is
-released."
+Emacs color well."
   :group 'preview-appearance
   :type '(choice
          (const :tag "Adjust to Emacs color (gs > 9.27)" t)