Re: extents and insert-before-markers
Does VM really sometimes insert and sometimes insert-before-markers
at
the same place?
This is how summary update is done:
if start and end are the markers for the start and end of the summary
line for the current message, it does (schematically):
(goto-char end)
(insert-before-markers "z")
(goto-char start)
(delete-region start (1- end))
(insert updated-summary-text)
(delete-char 1)
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