[PATCH 3/8] config: fix key-only truthy values with urlmatch

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

When using --get-urlmatch, we need a way to distinguish between
between key-only or a `key=val' pair even if the `val' is empty.
In other words, git interprets `-c imap.debug' as true and
`-c imap.debug=' as false, but an untyped --get-urlmatch
invocation has no way to distinguish between them.

So we must specify we want `--bool' (we're avoiding `--type=bool'
since that only appears in git 2.18+)

Fixes: f170d220f876 (lei: fix `-c NAME=VALUE' config support)
---
 lib/PublicInbox/Config.pm    | 18 ++++++++++++------
 lib/PublicInbox/NetReader.pm | 18 +++++-------------
 t/imapd-tls.t                |  4 +++-
 t/nntpd-tls.t                |  4 +++-
 4 files changed, 23 insertions(+), 21 deletions(-)

diff --git a/lib/PublicInbox/Config.pm b/lib/PublicInbox/Config.pm
index 9f764c32..15e0872e 100644
--- a/lib/PublicInbox/Config.pm
+++ b/lib/PublicInbox/Config.pm
@@ -568,28 +568,34 @@ sub config_cmd {
 }
 
 sub urlmatch {
-	my ($self, $key, $url, $try_git) = @_;
+	my $self = shift;
+	my @bool = $_[0] eq '--bool' ? (shift) : ();
+	my ($key, $url, $try_git) = @_;
 	state $urlmatch_broken; # requires git 1.8.5
 	return if $urlmatch_broken;
 	my (%env, %opt);
 	my $cmd = $self->config_cmd(\%env, \%opt);
-	push @$cmd, qw(-z --includes --get-urlmatch), $key, $url;
+	push @$cmd, @bool, qw(--includes -z --get-urlmatch), $key, $url;
 	my $fh = popen_rd($cmd, \%env, \%opt);
 	local $/ = "\0";
 	my $val = <$fh>;
 	if (!close($fh)) {
 		undef $val;
-		if (($? >> 8) != 1) {
+		if (@bool && ($? >> 8) == 128) { # not boolean
+		} elsif (($? >> 8) != 1) {
 			$urlmatch_broken = 1;
 		} elsif ($try_git) { # n.b. this takes cwd into account
-			$cmd = [qw(git config -z --get-urlmatch), $key, $url];
-			$fh = popen_rd($cmd);
+			$fh = popen_rd([qw(git config), @bool,
+					qw(-z --get-urlmatch), $key, $url]);
 			$val = <$fh>;
 			close($fh) or undef($val);
 		}
 	}
 	$? = 0; # don't influence lei exit status
-	chomp $val if defined $val;
+	if (defined($val)) {
+		chomp $val;
+		$val = git_bool($val) if @bool;
+	}
 	$val;
 }
 
diff --git a/lib/PublicInbox/NetReader.pm b/lib/PublicInbox/NetReader.pm
index e14b5805..5819f210 100644
--- a/lib/PublicInbox/NetReader.pm
+++ b/lib/PublicInbox/NetReader.pm
@@ -319,14 +319,6 @@ sub cfg_intvl ($$$) {
 	}
 }
 
-sub cfg_bool ($$$) {
-	my ($cfg, $key, $url) = @_;
-	my $orig = $cfg->urlmatch($key, $url) // return;
-	my $bool = $cfg->git_bool($orig);
-	warn "W: $key=$orig for $url is not boolean\n" unless defined($bool);
-	$bool;
-}
-
 # flesh out common IMAP-specific data structures
 sub imap_common_init ($;$) {
 	my ($self, $lei) = @_;
@@ -344,8 +336,8 @@ sub imap_common_init ($;$) {
 
 		# knobs directly for Mail::IMAPClient->new
 		for my $k (qw(Starttls Debug Compress)) {
-			my $bool = cfg_bool($cfg, "imap.$k", $$uri) // next;
-			$mic_common->{$sec}->{$k} = $bool;
+			my $v = $cfg->urlmatch('--bool', "imap.$k", $$uri);
+			$mic_common->{$sec}->{$k} = $v if defined $v;
 		}
 		my $to = cfg_intvl($cfg, 'imap.timeout', $$uri);
 		$mic_common->{$sec}->{Timeout} = $to if $to;
@@ -398,7 +390,7 @@ sub nntp_common_init ($;$) {
 		my $args = $nn_common->{$sec} //= {};
 
 		# Debug and Timeout are passed to Net::NNTP->new
-		my $v = cfg_bool($cfg, 'nntp.Debug', $$uri);
+		my $v = $cfg->urlmatch(qw(--bool nntp.Debug), $$uri);
 		$args->{Debug} = $v if defined $v;
 		my $to = cfg_intvl($cfg, 'nntp.Timeout', $$uri);
 		$args->{Timeout} = $to if $to;
@@ -407,8 +399,8 @@ sub nntp_common_init ($;$) {
 
 		# Net::NNTP post-connect commands
 		for my $k (qw(starttls compress)) {
-			$v = cfg_bool($cfg, "nntp.$k", $$uri) // next;
-			$self->{cfg_opt}->{$sec}->{$k} = $v;
+			$v = $cfg->urlmatch('--bool', "nntp.$k", $$uri);
+			$self->{cfg_opt}->{$sec}->{$k} = $v if defined $v;
 		}
 
 		# -watch internal option
diff --git a/t/imapd-tls.t b/t/imapd-tls.t
index 44ab350c..673a9436 100644
--- a/t/imapd-tls.t
+++ b/t/imapd-tls.t
@@ -158,8 +158,10 @@ for my $args (
 	test_lei(sub {
 		lei_ok qw(ls-mail-source), "imap://$starttls_addr",
 			\'STARTTLS not used by default';
-		ok(!lei(qw(ls-mail-source -c imap.starttls=true),
+		ok(!lei(qw(ls-mail-source -c imap.starttls),
 			"imap://$starttls_addr"), 'STARTTLS verify fails');
+		unlike $lei_err, qr!W: imap\.starttls= .*? is not boolean!i,
+			'no non-boolean warning';
 	});
 
 	SKIP: {
diff --git a/t/nntpd-tls.t b/t/nntpd-tls.t
index 2a76867a..095aef96 100644
--- a/t/nntpd-tls.t
+++ b/t/nntpd-tls.t
@@ -149,10 +149,12 @@ for my $args (
 	test_lei(sub {
 		lei_ok qw(ls-mail-source), "nntp://$starttls_addr",
 			\'STARTTLS not used by default';
-		ok(!lei(qw(ls-mail-source -c nntp.starttls=true),
+		ok(!lei(qw(ls-mail-source -c nntp.starttls),
 			"nntp://$starttls_addr"), 'STARTTLS verify fails');
 		like $lei_err, qr/STARTTLS requested/,
 			'STARTTLS noted in stderr';
+		unlike $lei_err, qr!W: nntp\.starttls= .*? is not boolean!i,
+			'no non-boolean warning';
 	});
 
 	SKIP: {