On Mon, Jul 12, 2021 at 4:04 PM Jonathan Wakely via Gcc <gcc@gcc.gnu.org> wrote:
> GNU Hello has the same problem with its docs:
> https://www.gnu.org/software/hello/manual/hello.html#index-_002dg
> That URL is garbage because of the URL-encoded %2d character, and the
> fact it links to the wrong place (the description of the option, not
> the option itself). The former is no longer an issue for GCC (it was
> for many years) but the latter is still a problem.
>
> If you don't know where to find it yourself, the source is visible here:
> https://github.com/yugui/example/blob/master/doc/hello.texi#L208
I downloaded the source for the "hello" manual and recreated it with
Texinfo 6.8 (running " texi2any --html hello.texi --no-split"). I've
attached the results. The current output doesn't exhibit the problem
with the scrolling being at the wrong place - this problem has
evidently resolved itself since the time when the online "hello"
manual was generated. (I don't remember many complaints about it on
the mailing list, though: if we don't know about problems, we can't
fix them.)
The URL is mangled because index entries can have more characters in
them than what is suitable for a URL. A space character becomes a "-",
so a "-" has to become something else. They have to be distinguished
because there may be two separate index entries in different places
which wouldn't be distinguishable otherwise.
However, I find that adding an extra index entry means you can use
hello.html#index-greeting instead:
@item --greeting=@var{text}
@itemx -g @var{text}
@opindex greeting
@opindex --greeting
@opindex -g
Output @var{text} instead of the default greeting.
