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b220562637
While investigating Bug#20759, I discovered other quoting problems: C-h f mishandled characters like backslash and quote in function names. This fix changes the behavior so that 'C-h f pcase RET' now generates "... (\` QPAT) ..." instead of "... (` QPAT) ...", because '(format "%S" '(` FOO))' returns "(\\` FOO)". A comment in src/lread.c's read1 function says that the backslash will be needed starting in Emacs 25, which implies that 'format' is correct and the old pcase documention was wrong to omit the backslash. * lisp/emacs-lisp/nadvice.el (advice--make-docstring): * lisp/help-fns.el (help-fns--signature): * lisp/help.el (help-add-fundoc-usage): * lisp/progmodes/elisp-mode.el (elisp-function-argstring): Use help--make-usage-docstring rather than formatting help-make-usage. * lisp/emacs-lisp/pcase.el (pcase--make-docstring): Return raw docstring. * lisp/help-fns.el (help-fns--signature): New arg RAW, to return raw docstring. Take more care to distinguish raw from cooked dstrings. (describe-function-1): Let help-fns--signature substitute command keys. * lisp/help.el (help--docstring-quote): New function. (help-split-fundoc): Use it, to quote funny characters more systematically. (help--make-usage): Rename from help-make-usage, since this should be private. Leave an obsolete alias for the old name. (help--make-usage-docstring): New function. * test/automated/help-fns.el (help-fns-test-funny-names): New test. |
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