2012/7/18 Roan Kattouw <roan.kattouw@gmail.com>

Today I approved and merged a change [1] by Brad Jorsch that changes
the way continue parameters are used in some API modules. These
changes do not break backwards compatibility unless you were doing
things you weren't supposed to, but I figured I should announce them
anyway.

There were a few modules that were using continuations like
<query-continue><allcategories acfrom="Foobar" /></query-continue> ;
some of these were changed to use a dedicated accontinue parameter
instead of reusing acfrom (keeping acfrom, it has a legitimate
purpose). This shouldn't be a problem for clients that use values from
query-continue verbatim and don't make any assumptions about which
parameters will be used for continuations. The following modules are
affected:
* allcategories (acfrom -> accontinue)
* allimages (aifrom -> aicontinue)
* alllinks now consistently uses alcontinue instead of alfrom in all
cases; previously, alfrom was used in some cases and alcontinue in
others
* allpages (apfrom -> apcontinue)
* filearchive (fafrom -> facontinue)

Additionally, the values provided in query-continue will no longer be
normalized for presentation, and the values read from the continue
parameters will no longer be normalized for database usage. This won't
be a problem if you're just passing query-continue values back in
verbatim, but it might present problems if you were using continue
parameters in hacky ways to jump to certain parts of the result. This
change was needed to fix bug 36987[2] and bug 29290 [3]. The following
modules and parameters are affected:
* allcategories (accontinue)
* allimages (aicontinue)
* alllinks (alcontinue)
* allpages (apcontinue)
* categories (clcontinue)
* deletedrevs (dlcontinue)
* duplicatefiles (dfcontinue)
* filearchive (facontinue)
* iwbacklinks (iwblcontinue)
* iwlinks (iwcontinue)
* images (imcontinue)
* langbacklinks (lblcontinue)
* links (plcontinue)
* templates (tlcontinue)
* watchlistraw (wrcontinue)

This change will be deployed as part of the 1.20wmf8 deployment. This
will be deployed to different wikis on different days over the course
of the next two weeks, see the deployment schedule [4].

Roan

[1] https://gerrit.wikimedia.org/r/#/c/8407/
[2] https://bugzilla.wikimedia.org/show_bug.cgi?id=36987
[3] https://bugzilla.wikimedia.org/show_bug.cgi?id=29290
[4] https://www.mediawiki.org/wiki/MediaWiki_1.20/Roadmap#Schedule_for_the_deployments

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