Defer reformat_separators() Using g_idle_add_once()

Wrap the function to run after the current GTK event loop iteration, when it's safe to mutate the buffer.

Author: mbkma

src/math-equation.c

@@ -299,7 +299,7 @@ reformat_display(MathEquation *equation)
     reformat_ans(equation);
 
     /* Add/remove thousands separators */
-    reformat_separators(equation);
+    g_idle_add_once(reformat_separators, equation);
 
     g_signal_emit_by_name(equation, "display-changed");
 }
@@ -1901,8 +1901,8 @@ insert_text_cb(MathEquation  *equation,
     equation->priv->state.entered_multiply = strcmp(text, "×") == 0;
 
     /* Update thousands separators */
-    reformat_separators(equation);
-
+    g_idle_add_once(reformat_separators, equation);
+    
     g_object_notify(G_OBJECT(equation), "display");
 }
 
@@ -1918,7 +1918,7 @@ delete_range_cb(MathEquation  *equation,
     equation->priv->state.entered_multiply = FALSE;
 
     /* Update thousands separators */
-    reformat_separators(equation);
+    g_idle_add_once(reformat_separators, equation);
 
     // FIXME: A replace will emit this both for delete-range and insert-text, can it be avoided?
     g_object_notify(G_OBJECT(equation), "display");