Ev2 and text deltas

Quick question: is there a method via Ev2 to set text deltas? I see
svn_editor_set_text(), but that appears to just apply full texts to
the target (via the given stream), rather than text deltas. This
seems odd. Why wouldn't we use text deltas instead of a simple
stream?

Also, after reading the docs in svn_editor.h, it feels like all text
contents are sent in 'postfix' mode. In other words, in Ev1, we have
the following sequence of calls:
 open_file()
 close_file()
 ...
 apply_textdelta()

Whereas in Ev2 we have:
 add_file()
 ...
 set_text()

Just trying a bit harder to grok Ev2,
-Hyrum

-- 
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