================
@@ -132,18 +132,97 @@ is a zero-based file offset, assuming ‘utf-8-unix’
coding."
(lambda (byte &optional _quality _coding-system)
(byte-to-position (1+ byte)))))
-;;;###autoload
-(defun clang-format-region (start end &optional style assume-file-name)
- "Use clang-format to format the code between START and END according to
STYLE.
-If called interactively uses the region or the current statement if there is no
-no active region. If no STYLE is given uses `clang-format-style'. Use
-ASSUME-FILE-NAME to locate a style config file, if no ASSUME-FILE-NAME is given
-uses the function `buffer-file-name'."
- (interactive
- (if (use-region-p)
- (list (region-beginning) (region-end))
- (list (point) (point))))
+(defun clang-format--git-diffs-get-diff-lines (file-orig file-new)
+ "Return all line regions that contain diffs between FILE-ORIG and
+FILE-NEW. If there is no diff 'nil' is returned. Otherwise the
+return is a 'list' of lines in the format '--lines=<start>:<end>'
+which can be passed directly to 'clang-format'"
+ ;; Temporary buffer for output of diff.
+ (with-temp-buffer
+ (let ((status (call-process
+ "diff"
+ nil
+ (current-buffer)
+ nil
+ ;; Binary diff has different behaviors that we
+ ;; aren't interested in.
+ "-a"
+ ;; Printout changes as only the line groups.
+ "--changed-group-format=--lines=%dF:%dL "
+ ;; Ignore unchanged content.
+ "--unchanged-group-format="
+ file-orig
+ file-new
+ )
+ )
+ (stderr (concat (if (zerop (buffer-size)) "" ": ")
+ (buffer-substring-no-properties
+ (point-min) (line-end-position)))))
+ (when (stringp status)
----------------
ideasman42 wrote:
\*picky\* I think a `(cond ...)` would read better than unless & if statements.
example:
```elisp
(cond
((stringp status) ...snip...)
((= status 0) nil)
((= status 1) ...snip...)
(t (error ...snip...)))
```
https://github.com/llvm/llvm-project/pull/112792
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