bug#24870: 26.0.50; parse-partial-sexp ignores comment-end

[Andreas Röhler]

On 30.11.2016 10:10, Matt Armstrong wrote:

Andreas Röhler <andreas.roehler@easy-emacs.de> writes:

haskell-mode, at EOB: --- {- To explore this file: -} asdf = --- parse-partial-sexp thinks being inside a paren - see attachment. GNU Emacs 26.0.50.1 (i686-pc-linux-gnu, GTK+ Version 3.14.5) of 2016-10-11

Hi Andreas, Emacs does not have a haskell-mode, so this bug is difficult to reproduce. It may be more appropriate to report this to the haskell-mode maintainers for triage. They can figure out if it is a problem that should be fixed in haskell-mode itself, or a problem with Emacs. Alternatively, can you provide a series of clear instructions to reproduce the problem in a fresh Emacs started without your customizations? For example, begin by running "emacs -Q" and go from there. Your attached .png presents a buffer called *parse-partial-sexp-output*, but it is not clear how this was generated. Thanks

Hi Matt,

checked that with help of the haskell-mode folks already.
https://github.com/haskell/haskell-mode/issues/1459

As it's nice at current pretest Emacs, concluded a bug in trunk.
Here a shortened recipe. Put code below in a buffer:

{- Just a comment: -}

M-x haskell-mode RET

As after a comment, there should be no nesting.
Than evaluate one of the forms below

(insert (format "%S" (syntax-ppss)))
(insert (format "%S" (parse-partial-sexp (point-min) (point))))

Result both: (1 1 22 nil nil nil 0 nil nil (1) nil)

GNU Emacs 26.0.50.1 (i686-pc-linux-gnu, GTK+ Version 3.14.5) of 2016-11-15