I edited my own question and received an Editor badge for it. I don't think that editing your own question should get you the badge.
1 Answer
The bronze Editor badge is mostly to encourage learning the basic mechanics of the site, there's no restriction on earning it only via editing others' posts.
The related silver Strunk and White and gold Copy Editor badges have more stringent requirements including not counting edits to one's own posts.
The List of all badges with full descriptions has the definitive descriptions:
Editor
- bronze; awarded once
- Related to Strunk & White (silver), Copy Editor (gold)
- Edit any question or answer
- Edits that consist only of tag changes do not count
- Edits you suggest before gaining full edit privileges do count, once approved
- Source: How will Editor, Strunk & White and Copy Editor be affected by the new <2k edit mechanism?
Strunk & White
- silver; awarded once; same family as Copy Editor (gold)
- Related to Editor (bronze)
- Perform a total of 80 edits between questions and answers
- Edits on deleted posts do not count
- Edits to your own posts do not count
- Edits to CW posts do count
- Edits that consist only of tag changes do not count
- Tag wiki edits do count
- Edits you suggest before gaining full edit privileges do count, once approved
- Each edited post counts only once, regardless of how many additional edits you may submit
- Sources: What kind of edits contribute to the editor badges?, Tag wiki badge suggestions, How will Editor, Strunk & White and Copy Editor be affected by the new <2k edit mechanism?, waffles's Feb. 2011 announcement of editor badge rule changes
Copy Editor
- gold; awarded once; same family as Strunk & White (silver)
- Related to Editor (bronze)
- Perform a total of 500 edits between questions, answers and tag wikis
- Edits on deleted posts do not count
- Edits to your own posts do not count
- Edits to CW posts do count
- Edits that consist only of tag changes do not count
- Tag wiki edits do count
- Edits you suggest before gaining full edit privileges do count, once approved
- Each edited post counts only once, regardless of how many additional edits you may submit
- Sources: What kind of edits contribute to the editor badges?, Tag wiki badge suggestions, How will Editor, Strunk & White and Copy Editor be affected by the new <2k edit mechanism?, waffles's Feb. 2011 announcement of editor badge rule changes