* [PATCH] extmsg: don't bother partial matching with <16 chars
@ 2019-01-20 12:37 Eric Wong
0 siblings, 0 replies; 1+ messages in thread
From: Eric Wong @ 2019-01-20 12:37 UTC (permalink / raw)
To: meta
It's not worth it, and attempts to wildcard off
single-character Message-IDs(*) causes Xapian to error
out in unpredictable ways:
something terrible happened at /usr/lib/x86_64-linux-gnu/perl5/5.24/Search/Xapian/Enquire.pm line 54.
...propagated at lib/PublicInbox/Search.pm line 209.
So don't bother.
(*) because people blindly hit 'y' or 'n' when git-send-email
prompted them for In-Reply-To.
---
lib/PublicInbox/ExtMsg.pm | 16 +++++++++-------
1 file changed, 9 insertions(+), 7 deletions(-)
diff --git a/lib/PublicInbox/ExtMsg.pm b/lib/PublicInbox/ExtMsg.pm
index 51e7799..14d49cc 100644
--- a/lib/PublicInbox/ExtMsg.pm
+++ b/lib/PublicInbox/ExtMsg.pm
@@ -11,6 +11,7 @@ package PublicInbox::ExtMsg;
use PublicInbox::Hval;
use PublicInbox::MID qw/mid2path/;
use PublicInbox::WwwStream;
+our $MIN_PARTIAL_LEN = 16;
# TODO: user-configurable
our @EXT_URL = (
@@ -30,6 +31,7 @@ package PublicInbox::ExtMsg;
sub search_partial ($$) {
my ($srch, $mid) = @_;
+ return if length($mid) < $MIN_PARTIAL_LEN;
my $opt = { limit => PARTIAL_MAX, mset => 2 };
my @try = ("m:$mid*");
my $chop = $mid;
@@ -58,12 +60,12 @@ ($$)
}
foreach my $m (@try) {
- my $mset = eval { $srch->query($m, $opt) };
- if (ref($@) eq 'Search::Xapian::QueryParserError') {
- # If Xapian can't handle the wildcard since it
- # has too many results.
- next;
- }
+ # If Xapian can't handle the wildcard since it
+ # has too many results. $@ can be
+ # Search::Xapian::QueryParserError or even:
+ # "something terrible happened at ../Search/Xapian/Enquire.pm"
+ my $mset = eval { $srch->query($m, $opt) } or next;
+
my @mids = map {
my $doc = $_->get_document;
PublicInbox::SearchMsg->load_doc($doc)->mid;
@@ -112,7 +114,7 @@ sub ext_msg {
}
# can't find a partial match in current inbox, try the others:
- if (!$n_partial && length($mid) >= 16) {
+ if (!$n_partial && length($mid) >= $MIN_PARTIAL_LEN) {
foreach my $ibx (@ibx) {
$srch = $ibx->search or next;
$mids = search_partial($srch, $mid) or next;
--
EW
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2019-01-20 12:37 [PATCH] extmsg: don't bother partial matching with <16 chars Eric Wong
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