input: Convert buffer region to a specified input method

* input-conf.el (durand-convert-region-by-input-method): A helper to
  convert buffer text according to a chosen input method.  I think
  this is sometimes convenient.

1 files changed, 19 insertions, 0 deletions

diff --git a/input-conf.el b/input-conf.el
index ce01599..1ea7f0d 100644
--- a/input-conf.el
+++ b/input-conf.el
@@ -124,5 +124,24 @@ then enters the string STR, and returns the inputted string."
     (kill-buffer temp-buffer)
     result))
 
+(defun durand-convert-region-by-input-method (start end method)
+  "Convert the string in the region between START and END by the
+input-method METHOD.
+
+See the function `durand-convert-string-by-input-method' for
+more."
+  (interactive
+   (append
+    (cond ((region-active-p)
+           (list (region-beginning) (region-end)))
+          ((list (point) (point))))
+    (list (read-input-method-name "By which input method: "))))
+  (let* ((str (buffer-substring-no-properties start end))
+         (converted
+          (durand-convert-string-by-input-method str method)))
+    (delete-region start end)
+    (goto-char start)
+    (insert converted)))
+
 (provide 'input-conf)
 ;;; input-conf.el ends here