+ debian/rules: Drop --fail-missing argument to dh_missing, which is now the default.

Changes-By: lintian-brush
Fixes: lintian: package-uses-old-debhelper-compat-version
See-also: https://lintian.debian.org/tags/package-uses-old-debhelper-compat-version.html

_generateCurrentLineText may be called with an existing "string"
argument. Because we're potentially breaking the string up, based
on attributes such as language or formatting, this existing argument
is irrelevant. Plus calling voice() with two string arguments causes
a KeyError which interrupts the generation. Handle this condition by
removing the existing "string" argument before calling voice().

Gbp-Dch: Ignore

Sometimes we do this check multiple times during caret navigation and
object presentation. Caching the decision improves performance.

When authors use a div or span to create a placeholder-like experience
for a contenteditable entry, that div or span should lack the "editable"
state. We can use that check to improve performance in large content-
editable elements such as rich text editors.

WebKitGtk objects now expose the toolkit name as WebKitGTK. Our
script mapping for toolkits should probably not be case sensitive.
For the purpose of making newer releases of WebKitGtk still work
with older, stable versions of Orca, this commit just handles
the alternative casing for WebKitGtk.

Note that in some cases (e.g. Yelp), native caret navigation via
F7 does not seem to be reliably toggled. That is a feature of either
the app or the toolkit; not of Orca. This commit does not impact that.

See issue #244

Authors using ARIA are expected to provide names for their widgets,
and typically do. However, when they don't, and we try to infer what
might be the label based on surrounding text, we sometimes wind up
duplicating a string the author plans to present some other way.
And label inference is not especially performant. So only do the work
for native HTML widgets which lack an accessible name.

Update to upstream version '42.1'
with Debian dir 74f48321850554117a02cc8c397781d7e03051e2

orca Debian release 42.1-1