New answers tagged whitespace
1
In Markdown, two spaces at the end of the line cause a hard line break. markdown-mode highlights those for you, because otherwise they are indistinguishable from soft line breaks. It seems you have trailing white space in your diagram.
However, this is a bug since it shouldn't apply that face to trailing whitespace inside a code block.
0
Does this do what you want?
(defun collapse ()
(interactive)
(replace-regexp "> *[\n]+ *<" "><"))
Edited:
Just on selection:
(defun collapse ()
(interactive (if (use-region-p)
(progn
(setq start (region-beginning))
(setq end (region-end))
...
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