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CFLAGS=$(shell ./local/bin/xml2-config --cflags)
LDFLAGS=$(shell ./local/bin/xml2-config --libs)

foo: foo.o
	$(CC) -o foo foo.o $(LDFLAGS)

foo.o: foo.c
	$(CC) $(CFLAGS) -c -o foo.o foo.c

clean:

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#! /usr/bin/env ruby

require "bundler/inline"

gemfile do
  source "https://rubygems.org"
  gem "builder"
  gem "nokogiri"
  gem "benchmark-ips"
end

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CFLAGS=$(shell ./local/bin/xml2-config --cflags)
LDFLAGS=$(shell ./local/bin/xml2-config --libs)

foo: foo.o
	$(CC) -o foo foo.o $(LDFLAGS)

foo.o: foo.c
	$(CC) $(CFLAGS) -c -o foo.o foo.c

clean:

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I should really make this into a real plugin when I get time. But for now it will do.

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#! /usr/bin/env ruby
# coding: utf-8

# Copyright 2022 Mike Dalessio
#
# Permission is hereby granted, free of charge, to any person obtaining a copy of this software and
# associated documentation files (the "Software"), to deal in the Software without restriction,
# including without limitation the rights to use, copy, modify, merge, publish, distribute,
# sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:

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CFLAGS = -std=c89

default: run


benchmark-O0.o: benchmark.c
	$(CC) -O0 $(CFLAGS) -c -o benchmark-O0.o benchmark.c

lib-O0.o: lib.c
	$(CC) -O0 $(CFLAGS) -c -o lib-O0.o lib.c

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# String Encoding, Nokogiri and You: A Primer

## First: A Few Thing To Consider

1. It is common for HTML pages to declare 
1. Without information instructing it differently, Nokogiri's core library ([libxml2][]) will 

  [libxml2]: http://xmlsoft.org/
  [meta-bug]: https://bugzilla.gnome.org/show_bug.cgi?id=579317

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#! /usr/bin/env ruby
#
#  find transitive reverse dependencies of nokogiri with more than a million downloads: "rdeps.rb nokogiri 1000000"
#
require "bundler/inline"

gemfile do
  gem "json"
  gem "ruby-progressbar"
end

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This gist reproduces a memory usage error in Ruby's iseq_peephole_optimize.

1. Compile Ruby with ASan (using CFLAGS="-fsanitize=address -ggdb")
2. Turn off memory leak detection (which is not relevant)export ASAN_OPTIONS=detect_leaks=0
3. Run ruby ./repro.rb

You should see something like:

before require

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XML Document parsing benchmark
                               user     system      total        real
hpricot:xml:doc           10.160000   0.950000  11.110000 ( 11.144462)
hpricot2:xml:doc           0.950000   0.000000   0.950000 (  0.953266)
nokogiri:compat:doc        0.220000   0.020000   0.240000 (  0.238401)
nokogiri:xml:doc           0.170000   0.030000   0.200000 (  0.200283)

XML XPath benchmarks (//status/text, //user/name)
                               user     system      total        real
hpricot:xml:xpath          7.580000   1.150000   8.730000 (  8.728314)