[PATCH] viewdiff: do not anchor spaces after filenames in diffstat

[Eric Wong <e@80x24.org>]

SZEDER Gábor <szeder.dev@gmail.com> wrote:
> On Fri, Jul 05, 2019 at 04:06:18AM +0000, Eric Wong wrote:
> > Eric Wong <e@80x24.org> wrote:
> > > SZEDER Gábor <szeder.dev@gmail.com> wrote:
> > > >   https://public-inbox.org/git/20190624130226.17293-2-pclouds@gmail.com/
> > 
> > Btw, I'm not sure if the "(new +x)" and all the surrounding
> > spaces should be clickable.  I have poor coordination, so when I
> > (rarely) use a mouse I prefer bigger targets to click; but maybe
> > it can get confusing...
> 
> FWIW, I didn't find it odd or surprising that the "(new +x)" is part
> of the link, and its color clearly indicates that it is part of the
> link.
> 
> I haven't yet noticed that all the spaces following the filename are
> clickable as well, because they don't look like part of the link
> (well, being spaces, they don't have any color...), and haven't
> noticed the cursor changing shape when hovering over them.
> 
> I'm not so sure about this, and think that it can be
> confusing/undesired in some circumstances.  A user can click on any
> "inactive" part of the browser window (i.e. what isn't a link, a
> button, or any active GUI widget) to focus and raise the window
> without any other effects, so they might just happen to click on
> those unsuspicious spaces because they don't look like a link, and
> then be surprised when the page jumps to corresponding diff.

OK, I didn't realize how bad the problem is, since I mainly
use w3m for web development and that doesn't underline links
by default.  Will push this out soon:

------8<------
Subject: [PATCH] viewdiff: do not anchor spaces after filenames in diffstat

Viewing a CSS-less page in a browser which underlines links
can show a long line of underscores after diffstats.  Not all
browsers underline links by default, though.
---
 lib/PublicInbox/ViewDiff.pm | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/PublicInbox/ViewDiff.pm b/lib/PublicInbox/ViewDiff.pm
index 4669e874..4d72eb48 100644
--- a/lib/PublicInbox/ViewDiff.pm
+++ b/lib/PublicInbox/ViewDiff.pm
@@ -104,8 +104,9 @@ sub anchor0 ($$$$$) {
 
 	if (my $attr = to_attr($ctx->{-apfx}.$fn)) {
 		$ctx->{-anchors}->{$attr} = 1;
+		my $spaces = ($orig =~ s/( +)\z//) ? $1 : '';
 		$$dst .= " <a\nid=i$attr\nhref=#$attr>" .
-			ascii_html($orig) . '</a>'.
+			ascii_html($orig) . '</a>' . $spaces .
 			to_html($linkify, $rest);
 		return 1;
 	}