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isolate the snippet of source code used in formatted error messages #1920

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isolate the snippet of source code used in formatted error messages #1920

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10 changes: 9 additions & 1 deletion flycheck.el
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Original file line number Diff line number Diff line change
Expand Up @@ -3864,6 +3864,14 @@ most. It defaults to 20."
"\\s-+" " " (buffer-substring beg (min end (point-max))))
(or max-length 20) nil nil t))))))

;; use isolates and direction markers to make it less likely for text
;; taken from the source to render the error message unreable
;; (sdrawkcab).
(defconst flycheck--format-snippet
(concat "`\N{LEFT-TO-RIGHT MARK}\N{FIRST STRONG ISOLATE}"
"%s\N{POP DIRECTIONAL ISOLATE}\N{LEFT-TO-RIGHT MARK}': ")
"Format string to use on a snippet of source code related to the error.")

(defun flycheck-error-format-message-and-id (err &optional include-snippet)
"Format the message and id of ERR as human-readable string.

Expand All @@ -3877,7 +3885,7 @@ beginning position)."
(concat (and other-file-p (format "In %S:\n" (file-relative-name fname)))
(and include-snippet
(-when-let* ((snippet (flycheck-error-format-snippet err)))
(flycheck--format-message "`%s': " snippet)))
(flycheck--format-message flycheck--format-snippet snippet)))
(or (flycheck-error-message err)
(format "Unknown %S" (flycheck-error-level err)))
(and id (format " [%s]" id)))))
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