Resolves aliases in translated tags. For example, say we lookup `遠坂凛`
and find `tohsaka_rin` and `toosaka_rin`. We apply aliases so that
`tohsaka_rin` becomes `toosaka_rin`, which is then returned as the only
translated tag.
* Allow every controller to take the `search[id]` param.
* Parse the `search[id]` param the same way that the `id:<N>` metatag is
parsed. So `search[id]=1,2,3`, `search[id]=<42`, `search[id]=1..10`, for
example, are all accepted.
Each dmail creates two copies, one for the sender and one for the
receiver. Only spam check the receiver's copy.
Prevents senders from being able to tell when their messages are being
spam filtered.
Bug: when deleting a child post and the "Move favorites to parent?" option is
set, the parent's has_active_children flag is not cleared.
`give_favorites_to_parent` moves the votes, and moving the votes has the
side effect of reloading the post (to get the new score). But reloading
the post wipes out the is_deleted_changed? flag, which is used by `update_parent_on_save`.
Fix: update the `is_deleted` flag *before* moving favorites, so that the
`update_parent_on_save` callback runs before `give_favorite_to_parent` runs.
Adding or removing a post id to a favgroup's post_ids string is
non-atomic. Lock it to prevent simultaneous updates to the same favgroup
from clobbering each other.
Same bug as #3091.
Fixes an exception when attempting to upload a Pixiv image from a
deleted work. The download strategy tries to fetch the source data in
the course of rewriting the URL, which fails if the work has been
deleted from Pixiv.
Raise a BadIDError and leave the URL as-is (don't rewrite it).
Fixup for a bug in 134958d1. `Post.fast_count("pool:1537")` still
returned zero because `Tag.is_simple_tag?` incorrectly parsed
"pool:1537" as a simple tag, so Post.fast_count still looked for it in
the tags table and found the empty "pool:1537" tag.
Fixes Post#get_count_from_cache to only lookup the count in the tags
table when the search is for a single "simple" tag.
Check memcache when the search is not a simple tag:
* multi-tag searches (touhou rating:s)
* single metatag searches (rating:s, source:"foo bar")
* negated tags (-touhou)
* wildcard tags (*touhou*)
* or searches (~touhou)
