Saving when the coding system can't code all buffer characters

[Lennart Borgman]

After a paste of some info to an Emacs buffer I got this message when 
trying to save the buffer:

These default coding systems were tried to encode text
in the buffer `temp-lang.c':
iso-latin-1-dos
However, each of them encountered these problematic characters:
iso-latin-1-dos: ’
The first problematic character is at point in the displayed buffer,
and C-u C-x = will give information about it.

At the prompt "Select coding system (default mule-utf-8):" this just 
gives information about the minibuffer. And when using C-g to quit the 
problematic character disappears from screen. Quite inconvenient IMHO. 
Could it be made a bit easier to use please?