Previously, for images with no alt-text, the zoomed image wouldn't get
properly inserted. For images with alt-text, both the zoomed and
unzoomed image would be displayed at once (bug#71666).
* lisp/net/shr.el (shr-sliced-image): New face.
(shr-zoom-image): Reimplement using
'next/previous-single-property-change', and don't bother deleting any of
the text.
(shr-image-fetched): Clean up any overlays when deleting the old region.
(shr-put-image): Ensure we always have a non-empty string to put the
image on. For sliced images, just use "*", since we'll repeat it, so we
can't preserve the original buffer text exactly anyway. Apply an
overlay to sliced images to prevent unsightly text decorations.
(shr-tag-img): Move the placeholder space insertion where it should be
and explain what it's doing.
* test/lisp/net/shr-tests.el (shr-test--max-wait-time)
(shr-test-wait-for): New helper functions.
(shr-test/zoom-image): New test.
The 'shr-fill-...' functions handle both hard-filling (adding
newlines to break long lines) and indentation. Setting
'shr-fill-text' to nil currently causes these functions to be
short-circuited completely, so e.g. blockquotes are no longer
indented, whereas the intent of this user option is only to
prevent hard-filling to let visual-line-mode reflow text.
* lisp/net/shr.el (shr-fill-lines): Document that the function
handles more than just filling; move the 'shr-fill-text' check...
(shr-fill-line): ... here, after indentation has been taken care
of.
* test/lisp/net/shr-resources/blockquote.html:
* test/lisp/net/shr-resources/blockquote.txt: New test resources.
* test/lisp/net/shr-tests.el (shr-test--rendering-check): Rename
from 'shr-test', to make the relationship with the 'rendering'
testcase clearer; prefer 'file-name-concat' to 'format'; raise
ERT failure if need be, calling (ert-fail ...) directly instead
of (should (not (list ...))).
(shr-test--rendering-extra-configs): New variable to easily check
that user customizations do not degrade rendering.
(rendering): Consult that new variable; delegate failure-raising
to reduce duplication.
* 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.
Most of this change is to boilerplate commentary such as license URLs.
This change was prompted by ftp://ftp.gnu.org's going-away party,
planned for November. Change these FTP URLs to https://ftp.gnu.org
instead. Make similar changes for URLs to other organizations moving
away from FTP. Also, change HTTP to HTTPS for URLs to gnu.org and
fsf.org when this works, as this will further help defend against
man-in-the-middle attacks (for this part I omitted the MS-DOS and
MS-Windows sources and the test tarballs to keep the workload down).
HTTPS is not fully working to lists.gnu.org so I left those URLs alone
for now.
