bug#33344: 26.1; doc-view bounding-box recognition doesn't work on path names with spaces

[Robert Spillner]

Hi,

in doc-view.el, line 1215, ghostscript is called via shell to grep the
bounding box of a ps or pdf-file. In line 1218, the last %s
(representing the filename) is used unquoted. Therefore, whenever the
filename or the directory pointing to this file has spaces in its name
gs won't be able to find it and determine a bounding box.

Please change line 1218 from

  (format "-dFirstPage=%s -dLastPage=%s %s"

to

  (format "-dFirstPage=%s -dLastPage=%s \"%s\""

Thank you!