bug#23130: 25.1.50; `C-h f' etc.: escaping in symbol names

[Lars Ingebrigtsen]

Andreas Schwab <schwab@linux-m68k.org> writes:

>> Why is `prin1' quoting the "." anyway?  It's not a special character for
>> the Lisp reader, is it?
>
> The following characters are always escaped in a symbol:
>
>               if (c == '\"' || c == '\\' || c == '\''
>                   || c == ';' || c == '#' || c == '(' || c == ')'
>                   || c == ',' || c == '.' || c == '`'
>                   || c == '[' || c == ']' || c == '?' || c <= 040
>                   || c == NO_BREAK_SPACE

But why "."?

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