git: Fix malformed utf8 recieved from git.

If git log outputs malformed utf8 in, eg, usernames, detect it and fix it
up. This avoids commits such as f71abc92aa279fbe0b7578b8c4752d775dd4a259
breaking things.

1 files changed, 6 insertions, 0 deletions

diff --git a/IkiWiki/Plugin/git.pm b/IkiWiki/Plugin/git.pm
index 3085a3b67..042c69f5a 100644
--- a/IkiWiki/Plugin/git.pm
+++ b/IkiWiki/Plugin/git.pm
@@ -139,6 +139,12 @@ sub safe_git (&@) {
 	my @lines;
 	while (<$OUT>) {
 		chomp;
+		
+		# check for invalid utf-8, and toss it back to avoid crashes
+		if (! utf8::valid($_)) {
+			$_=encode_utf8($_);
+		}
+
 		push @lines, $_;
 	}