From 43622f62162a5369bd0cf1c89dc565b9ba0b8f22 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?V=C3=ADt=20Ondruch?= <vondruch@redhat.com>
Date: Mon, 21 Jul 2025 17:43:08 +0200
Subject: [PATCH 1/2] Recognize quote as well as backtick in error message

Ruby 3.4 started use singlequote instead of opening backtick in the
error messages [[1]]. This exhibited in error:

~~~
 2) ABRT handles exception in 'abrt.rb' with RubyGems enabled
     Failure/Error:
       expect { system "ruby --disable-gems -rrubygems #{abrt_rb}" }
         .to output(/\A\Z/).to_stdout_from_any_process
         .and output(output_message_pattern).to_stderr_from_any_process

       expected block to output /\A\/mnt\/abrt\/spec\/..\/lib\/abrt.rb:\d+:in `<main>': can't modify frozen Array(: \[1, 2, 3\])? \((FrozenError|RuntimeError)\)\n\Z/ to stderr, but output "/mnt/abrt/spec/../lib/abrt.rb:15:in '<main>': can't modify frozen Array: [1, 2, 3] (FrozenError)\n"
       Diff for (output /\A\/mnt\/abrt\/spec\/..\/lib\/abrt.rb:\d+:in `<main>':...):
       @@ -1 +1 @@
       -/\A\/mnt\/abrt\/spec\/..\/lib\/abrt.rb:\d+:in `<main>': can't modify frozen Array(: \[1, 2, 3\])? \((FrozenError|RuntimeError)\)\n\Z/
       +/mnt/abrt/spec/../lib/abrt.rb:15:in '<main>': can't modify frozen Array: [1, 2, 3] (FrozenError)

     # ./spec/abrt_spec.rb:16:in 'block (3 levels) in <top (required)>'
~~~

[1]: https://bugs.ruby-lang.org/issues/16495
---
 spec/abrt_spec.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/spec/abrt_spec.rb b/spec/abrt_spec.rb
index cd8ef41..3133261 100644
--- a/spec/abrt_spec.rb
+++ b/spec/abrt_spec.rb
@@ -3,7 +3,7 @@
 describe 'ABRT' do
   context "handles exception in 'abrt.rb' with RubyGems" do
     abrt_rb = File.join(File.dirname(__FILE__), '../lib/abrt.rb')
-    output_message_pattern = /\A#{abrt_rb}:\d+:in `<main>': can't modify frozen Array(: \[1, 2, 3\])? \((FrozenError|RuntimeError)\)\n\Z/
+    output_message_pattern = /\A#{abrt_rb}:\d+:in [`']<main>': can't modify frozen Array(: \[1, 2, 3\])? \((FrozenError|RuntimeError)\)\n\Z/
 
     it 'disabled' do
       expect { system "ruby --disable-gems #{abrt_rb}" }

From b35ced0fb2e92bfee3178c4714e1d5989a124d83 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?V=C3=ADt=20Ondruch?= <vondruch@redhat.com>
Date: Fri, 1 Aug 2025 13:04:20 +0200
Subject: [PATCH 2/2] Use custom `UtilLinuxLogger` instead `syslog`

`syslog` used to be part of StdLib. But beginning with  Ruby 3.4, it was
extracted into default gems. This is problematic when Ruby is executed
with `--disable-gems`, because there is no easy way to require `syslog`.

Therefore, this commit introduces custom `UtilLinuxLogger`. This use
`logger` command from util-linux and implemnts just minimal `Syslog`
interface required.

While this could have been used just as a fallback, when `syslog` can't
be required, it will be easier to use it every time.

Fixes #12
---
 README.md                     |  5 +++++
 lib/abrt/handler.rb           |  4 ++--
 lib/abrt/util_linux_logger.rb | 34 ++++++++++++++++++++++++++++++++++
 3 files changed, 41 insertions(+), 2 deletions(-)
 create mode 100644 lib/abrt/util_linux_logger.rb

diff --git a/README.md b/README.md
index 8a4c503..23e2f86 100644
--- a/README.md
+++ b/README.md
@@ -20,6 +20,11 @@ gem "abrt", :require => false
 
 line into your *Gemfile*.
 
+### Dependencies
+
+This library is `logger` utility from util-linux for logging purposes. Please
+make sure it is available on your system for proper functionality.
+
 ## Usage
 
 There are several ways how to run any application with ABRT handler enabled.
diff --git a/lib/abrt/handler.rb b/lib/abrt/handler.rb
index e116fde..27ee525 100644
--- a/lib/abrt/handler.rb
+++ b/lib/abrt/handler.rb
@@ -1,5 +1,5 @@
 require 'socket'
-require 'syslog'
+require_relative 'util_linux_logger'
 require_relative 'exception'
 
 module ABRT
@@ -16,7 +16,7 @@ def self.handle_exception(exception)
 private
 
   def self.syslog
-    @syslog ||= Syslog.open 'abrt'
+    @syslog ||= UtilLinuxLogger.open 'abrt'
   end
 
   def self.report(exception, io = nil)
diff --git a/lib/abrt/util_linux_logger.rb b/lib/abrt/util_linux_logger.rb
new file mode 100644
index 0000000..32b85fa
--- /dev/null
+++ b/lib/abrt/util_linux_logger.rb
@@ -0,0 +1,34 @@
+# UtilLinuxLogger is small utility class intended to be drop in replacement for
+# Syslog. It uses `logger` command from util-linux project to provide system
+# logging facilities.
+#
+# It implements just minimal interface required by ABRT project.
+class UtilLinuxLogger
+  # :yields: syslog
+  #
+  # Open the UtilLinuxLoggersyslog facility.
+  #
+  # `ident` is a String which identifies the calling program.
+  def self.open(ident)
+    self.new(ident)
+  end
+
+  def initialize(ident)
+    @ident = ident
+  end
+
+  def notice(format_string, *arguments)
+    log 'user.notice', format_string, *arguments
+  end
+
+  def err(format_string, *arguments)
+    log 'user.err', format_string, *arguments
+  end
+
+private
+  def log(priority, format_string, *arguments)
+    IO.popen "logger -p #{priority} -t #{@ident} --socket-errors=off", 'w' do |io|
+      io.write sprintf(format_string, *arguments)
+    end
+  end
+end