[Tex/LaTex] What’s a good editor for (La)TeX programming

Question

I've found several questions about editors for writing LaTeX documents ( LaTeX Editors/IDEs seems to be the definitive one). But I'd like to know which editors are out there that help you develop LaTeX packages or classes; editors that make it easier to program in LaTeX; a completely different activity.

When I'm programming I don't really care about symbol lookup, instant previews, SyncTeX or anything like that. I'd be more interested in features such as those in the following non-exhaustive list:

• an integrated build system and syntax highlighter that understand .dtx (and friends)
• smart auto-complete that draws from included packages
• hyper-linking between command definitions and usages
• tool-tips that show command documentation
• native support for etoolbox, etextools, latex3 and the like (in some shape or form)
• step-by-step expansion preview of selected code (a form of debugging)
• ability to recognize / select tokens (in addition to characters)
• an \expandafter-helper (you just point, the editor inserts the necessary \expandafters)
• automatic searching on CTAN

Well, I could go on, but you get the point.

I call upon all package authors: Which editor do you like? And why? (One editor per answer, please.)

Answer 1

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