* net/shr.el (shr-offer-extend-specpdl): New option, default t.
(shr-descend): If shr-offer-extend-specpdl is nil, don't even ask
whether to extend the specpdl, just signal error.
* lisp/net/shr.el (shr-insert): Speed up regularising spaces --
the vast majority of the spaces are already OK, so transforming
" " to " " just takes time.
* lisp/net/shr.el (shr-colorize-region): Extend backgrounds to the
end (bug#43031). This avoid ragged edges to the right when, for
instance, the <body> has a bgcolor.
(shr-face-background): Ditto.
* test/manual/image-transforms-tests.el: Replace hard-coded colors
with defaults.
* src/dispextern.h (struct image):
* src/image.c (search_image_cache):
(xbm_load_image):
(xbm_load):
(pbm_load): Rename from frame to face where relevant.
(svg_load_image): Parse the image to find out the size, then wrap it
in another SVG to set a new size and colors, etc.
(lookup_image): Use the face colors instead of the frame colors.
(search_image_cache): Add ability to ignore the face colors.
(uncache_image): Uncache all copies of the image that share the spec,
even if the face colors don't match.
* etc/NEWS: Describe the changes.
* lisp/net/shr.el (shr-max-width, shr-width): Fix typo and wording
of the doc strings.
* etc/NEWS: Fix the wording of the 'shr-max-width's entry, and
move it to the SHR section.
* lisp/net/shr.el (shr-target-id): Add docstring.
(shr-descend, shr-tag-a): Display dummy anchor characters as the
empty string. Give all relevant 'id' or 'name' fragment identifier
attributes the shr-target-id text property. This ensures that
cached content, such as tables, retains the property across
renders. (Bug#40532)
* lisp/net/eww.el: (eww-display-html): Adapt shr-target-id property
search accordingly.
* lisp/net/eww.el (eww): Use function-put in place of put, as
recommended in "(elisp) Symbol Plists".
(eww-follow-link):
* lisp/net/shr.el (shr-browse-url): Rather than call browse-url-mail
directly, call browse-url which respects the user options
browse-url-handlers and browse-url-mailto-function. (Bug#41133)
(shr--current-link-region): Return nil if there is no link at point.
(shr--blink-link): Adapt accordingly.
(shr-fill-line, shr-indent, shr-table-body): Refactor to avoid some
unnecessary allocations.
* etc/NEWS: Announce that eww-follow-link and shr-browse-url support
custom URL handlers.
* lisp/net/shr.el (shr-tag-code): Don't use the `default' font,
because it has properties that will override surrounding elements
(like <a...>) (bug#39504).
* lisp/net/shr.el (shr-dom-to-xml): Include an XML declaration if
we're encoding the data.
(shr-parse-image-data): Add comment about why encoding is necessary.
* lisp/net/shr.el (shr-dom-to-xml): For SVG images, take an
optional charset parameter to return unibyte data.
(shr-parse-image-data): Use it.
(shr-tag-svg): Ditto.
(svg--wrap-svg): Revert previous kludge.
* lisp/net/shr.el (shr--use-cookies-p): New function.
(shr-tag-img): Use it.
(shr-cookie-policy): New variable.
(shr-save-contents): Use cookies.
* doc/misc/eww.texi (Advanced): Document it.
* lisp/net/shr.el (svg--wrap-svg): Add a default foreground colour
to SVG images (bug#37159). This helps with images like the ones
in https://en.wikipedia.org/wiki/Banach_fixed-point_theorem that
specify no foreground or background colours.
(shr-parse-image-data): Use it.
This patch also moves the internal/external browser logic from
shr to browse-url, where it belongs more naturally.
* doc/misc/eww.texi (Basics): Adjust to browse-url-external-browser.
* doc/misc/gnus.texi (Article Commands): Ditto.
* lisp/gnus/gnus-art.el (gnus-button-url-regexp): Default to
`browse-url-button-regexp', which has taken over the definition
previously enjoyed by this variable.
* lisp/gnus/gnus-sum.el (gnus-summary-browse-url): Adjust usage.
* lisp/net/browse-url.el (browse-url--browser-defcustom-type): New
internal variable...
(browse-url-browser-function, browse-url-external-browser): Used
by these two; the latter of which is a new variable.
(browse-url-botton-regexp): New variable.
(browse-url-button-map): New keymap.
(browse-url-button): New face.
(browse-url-add-buttons): New function to add clickable browse-url
buttons to almost any buffer.
(browse-url-button-open): New command.
(browse-url-button-copy): New command.
* lisp/net/eww.el (eww-browse-with-external-browser)
(eww-follow-link): Adjust usage.
* lisp/net/shr.el (shr-external-browser): Make an obsolete alias
of `browse-url-external-browser'.
(shr-browse-url): Adjust usage.
* lisp/net/shr.el (shr-make-placeholder-image): We have already
computed the size of the placeholder including the scale, so force
the automatic scale to 1. This will make the placeholder the
correct size on HiDPI screen.
* lisp/net/shr.el (shr--image-type): New function.
(shr-rescale-image): Use it to allow image scaling on Emacsen with
ImageMagick support that does not have native image scaling support.
