Re: Variable-width font indentation

[Herring, Davis]

> I don't know of a good solution to this problem: in general,
> there's not enough information to distinguish 'indentation'
> spaces (the two spaces before `printf (', `pr ()', and `return 0')
> and 'line-up' spaces (the spaces before `char ()').

This is of course an argument in favor of "smart tabs" 
<https://www.emacswiki.org/emacs/SmartTabs>: you make each tab occupy some 
user-specified width, and _then_ count one character per space to do alignment. 
 That doesn't help if those tabs aren't present, although heuristics to detect 
certain exact numbers of spaces, comparing to the previous lines and looking 
for enclosing delimiters, might close enough of the gap between "treat all 
spaces as ASCII art alignment" and the ideal.

Davis