Backslashes in triggers are wonky

[dgw]

This kind of thing tells me that Bucket is inconsistent about escaping its input:

<Bucket> dgw aliased in #channel 'o\\\o' to 'o///o'
<Bucket> DB Error:  -> Duplicate entry 'o\\\o-o///o-<alias>' for key 'fact'
<dgw> Bucket, literal o\\\o
<Bucket> [a "don't know" response]
<dgw> Bucket: literal o\\\\\\o
<Bucket> o\\\o (=> o///o) (#7114) [-truncated-]

When teaching, backslashes are interpreted as-written, escaped as needed to be inserted in the database.

When looking up factoids, the necessary escaping is not happening. When given o\\\o, Bucket is actually trying to look up o\o:

<dgw> Bucket, alias o\o => o\\\o
<Bucket> Okay, dgw.
<dgw> Bucket: literal o\\\o
<Bucket> o\o (=> o///o) (#7114) [-truncated again-]

[dgw]

Self-assigning—potential Hacktoberfest work item.