[LaTeχ] Cleanup the promote-inline-math function

global.org

@@ -1112,9 +1112,7 @@
       (defun wilder/TeX-insert-align-dwim (arg)
         (interactive "P")
         (if (texmathp) (wilder/TeX-promote-inline-math arg)
-          (if arg
-              (LaTeX-insert-environment "align")
-            (LaTeX-insert-environment "align*"))))
+          (wilder/TeX-insert-align arg)))
     #+END_SRC
     This replaces horizontal space with a tilde
     #+BEGIN_SRC emacs-lisp
@@ -1133,22 +1131,27 @@
     #+END_SRC
     Promote inline math to an align
     #+BEGIN_SRC emacs-lisp
+      (defun wilder/char-punctuation-p (ch)
+        "returns t if the char is a punctuation"
+        (interactive)
+        (string-match (string ch) ".,:;"))
       (defun wilder/TeX-promote-inline-math (arg)
         (interactive "P")
-        (when (and (texmathp) (string-equal "$" (car texmathp-why)))
-          (goto-char (cdr texmathp-why))
-          (push-mark)
-          (kill-sexp)
-          (if arg
-              (LaTeX-insert-environment "align")
-            (LaTeX-insert-environment "align*"))
-          (yank)
-          (delete-backward-char 1)
-          (exchange-point-and-mark)
-          (delete-char 1)
-          (exchange-point-and-mark)
-          (pop-mark)
-          (pop-mark)))
+        (when (and (texmathp) (string-prefix-p "$" (car texmathp-why)))
+          (let* ((delim (car texmathp-why))
+                 (pos (cdr texmathp-why))
+                 (n (length delim)))
+            (goto-char pos)
+            (push-mark)
+            (delete-char n)
+            (search-forward delim)
+            (delete-backward-char n)
+            ;; include punctuations in the align
+            (when (wilder/char-punctuation-p (char-after)) (forward-char))
+            (activate-mark)
+            (wilder/TeX-insert-align arg)
+            (pop-mark)
+            (pop-mark))))
     #+END_SRC
 *** The hook
     #+BEGIN_SRC emacs-lisp