[PATCH 10/10] lei_ale: use v5.12, autodie, and try_cat

[Eric Wong]

Just things I spotted while looking for other problems
throughout our codebase.
---
 lib/PublicInbox/LeiALE.pm | 24 +++++++++++-------------
 1 file changed, 11 insertions(+), 13 deletions(-)

diff --git a/lib/PublicInbox/LeiALE.pm b/lib/PublicInbox/LeiALE.pm
index b198af1c..674d897e 100644
--- a/lib/PublicInbox/LeiALE.pm
+++ b/lib/PublicInbox/LeiALE.pm
@@ -1,4 +1,4 @@
-# Copyright (C) 2021 all contributors <meta@public-inbox.org>
+# Copyright (C) all contributors <meta@public-inbox.org>
 # License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
 
 # All Locals Ever: track lei/store + externals ever used as
@@ -6,10 +6,10 @@
 # and --only targets that haven't been through "lei add-external".
 # Typically: ~/.cache/lei/all_locals_ever.git
 package PublicInbox::LeiALE;
-use strict;
-use v5.10.1;
+use v5.12;
 use parent qw(PublicInbox::LeiSearch PublicInbox::Lock);
 use PublicInbox::Git qw(read_all);
+use autodie qw(close open rename seek truncate);
 use PublicInbox::Import;
 use PublicInbox::LeiXSearch;
 use Fcntl qw(SEEK_SET);
@@ -77,18 +77,16 @@ sub refresh_externals {
        if ($new ne '' || $gone) {
                $self->{lockfh}->autoflush(1);
                if ($gone) {
-                       seek($self->{lockfh}, 0, SEEK_SET) or die "seek: $!";
-                       truncate($self->{lockfh}, 0) or die "truncate: $!";
+                       seek($self->{lockfh}, 0, SEEK_SET);
+                       truncate($self->{lockfh}, 0);
                } else {
                        $old = '';
                }
                print { $self->{lockfh} } $old, $new or die "print: $!";
        }
-       $new = $old = '';
+       $new = '';
        my $f = $self->git->{git_dir}.'/objects/info/alternates';
-       if (open my $fh, '<', $f) {
-               read_all($fh, -s $fh, \$old);
-       }
+       $old = PublicInbox::Git::try_cat($f);
        for my $x (@ibxish) {
                $new .= $lei->canonpath_harder($x->git->{git_dir})."/objects\n";
        }
@@ -98,10 +96,10 @@ sub refresh_externals {
        # this needs to be atomic since child processes may start
        # git-cat-file at any time
        my $tmp = "$f.$$.tmp";
-       open my $fh, '>', $tmp or die "open($tmp): $!";
-       print $fh $new or die "print($tmp): $!";
-       close $fh or die "close($tmp): $!";
-       rename($tmp, $f) or die "rename($tmp, $f): $!";
+       open my $fh, '>', $tmp;
+       print $fh $new;
+       close $fh;
+       rename($tmp, $f)
 }
 
 1;