From: Mischa POSLAWSKY <perl@shiar.org>
Date: Wed, 15 Dec 2010 23:34:25 +0000 (+0100)
Subject: browser: derive support from surrounding versions
X-Git-Tag: v1.4~1
X-Git-Url: http://git.shiar.nl/sheet.git/commitdiff_plain/41beface2d4a28895b1983547dcbcc69b38a7743

browser: derive support from surrounding versions

Assume a version with undefined support value will be the same as either its
predecessor or unsupported successor.
---

diff --git a/browser.plp b/browser.plp
index 863f806..7eaa669 100644
--- a/browser.plp
+++ b/browser.plp
@@ -271,8 +271,10 @@ sub saybrowsercols {
 		my $compare = (
 			!defined $ver ? undef :      # last column if nameless
 			ref $data ne 'HASH' ? 'u' :  # unsupported if no support hash
-			$data->{$ver}                # known
-			|| 'u'                       # unsure unless oldest is unsupported
+			$data->{$ver} // $prev       # known or inherit from predecessor
+			// (grep { defined } @{$data}{ @{ $versions{$browser} } })[0]
+			   ~~ 'n' && 'n'             # first known version is unsupported
+			|| 'u'                       # unsure
 		);
 		unless (!defined $prev or $prev ~~ $compare) {
 			my $usage = sum(map { $canihas->{$browser}->{$_} } @span);