diff --git a/.gitignore b/.gitignore
new file mode 100644
index 00000000000..4409808bffe
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,166 @@
+# TODO: Sort me (while preserving the meaning of the negative rules).
+*.a
+*.astylebak
+*.astylebak.*
+*.la
+*.lang
+*.lo
+*.log
+*.o
+*.trs
+*~
+.deps/
+.dirstamp
+.vscode
+aclocal.m4
+autom4te.cache/
+btlayer-*
+cfgaux/
+compat/testPreCompiler
+config.status
+configure
+doc/Programming-Guide/html/
+errors/translate-warn
+include/autoconf.h
+include/autoconf.h.in
+include/stamp-h1
+lib/tests/testRFC1738
+libltdl
+libtool
+Makefile
+!contrib/nextstep/Makefile
+!doc/Programming-Guide/Makefile
+Makefile.in
+SPONSORS
+src/acl/external/delayer/ext_delayer_acl
+src/acl/external/delayer/ext_delayer_acl.8
+src/acl/external/file_userip/ext_file_userip_acl
+src/acl/external/kerberos_ldap_group/ext_kerberos_ldap_group_acl
+src/acl/external/kerberos_sid_group/ext_kerberos_sid_group_acl
+src/acl/external/kerberos_sid_group/ext_kerberos_sid_group_acl.8
+src/acl/external/SQL_session/ext_sql_session_acl
+src/acl/external/SQL_session/ext_sql_session_acl.8
+src/acl/external/unix_group/ext_unix_group_acl
+src/acl/external/wbinfo_group/ext_wbinfo_group_acl
+src/acl/external/wbinfo_group/ext_wbinfo_group_acl.8
+src/anyp/ProtocolType.cc
+src/auth/basic/DB/basic_db_auth
+src/auth/basic/DB/basic_db_auth.8
+src/auth/basic/fake/basic_fake_auth
+src/auth/basic/getpwnam/basic_getpwnam_auth
+src/auth/basic/NCSA/basic_ncsa_auth
+src/auth/basic/NIS/basic_nis_auth
+src/auth/basic/POP3/basic_pop3_auth
+src/auth/basic/POP3/basic_pop3_auth.8
+src/auth/basic/RADIUS/basic_radius_auth
+src/auth/basic/SMB/basic_smb_auth
+src/auth/CredentialState.cc
+src/auth/digest/file/digest_file_auth
+src/auth/negotiate/kerberos/negotiate_kerberos_auth
+src/auth/negotiate/kerberos/negotiate_kerberos_auth_test
+src/auth/negotiate/wrapper/negotiate_wrapper_auth
+src/auth/ntlm/fake/ntlm_fake_auth
+src/auth/Type.cc
+src/cf.data
+src/cf_gen
+src/cf_gen_defines.cci
+src/cf_parser.cci
+src/DiskIO/DiskDaemon/diskd
+src/DiskIO/DiskDaemon/time.cc
+src/err_detail_type.cc
+src/err_type.cc
+src/globals.cc
+src/hier_code.cc
+src/http/MethodType.cc
+src/http/url_rewriters/fake/url_fake_rewrite
+src/http/url_rewriters/LFS/url_lfs_rewrite
+src/http/url_rewriters/LFS/url_lfs_rewrite.8
+src/icp_opcode.cc
+src/log/DB/log_db_daemon
+src/log/DB/log_db_daemon.8
+src/log/file/log_file_daemon
+src/lookup_t.cc
+src/repl_modules.cc
+src/security/cert_generators/file/security_file_certgen
+src/security/cert_generators/file/security_file_certgen.8
+src/security/cert_validators/fake/security_fake_certverify
+src/security/cert_validators/fake/security_fake_certverify.8
+src/squid
+src/squid.8
+src/squid.conf.default
+src/squid.conf.documented
+src/store/id_rewriters/file/storeid_file_rewrite
+src/store/id_rewriters/file/storeid_file_rewrite.8
+src/swap_log_op.cc
+src/test_tools.cc
+src/tests/test_http_range
+src/tests/testACLMaxUserIP
+src/tests/testBoilerplate
+src/tests/testCacheManager
+src/tests/testCharacterSet
+src/tests/testConfigParser
+src/tests/testDiskIO
+src/tests/testDns
+src/tests/testEnumIterator
+src/tests/testEvent
+src/tests/testEventLoop
+src/tests/testHttp1Parser
+src/tests/testHttpReply
+src/tests/testHttpRequest
+src/tests/testIcmp
+src/tests/testIpAddress
+src/tests/testLookupTable
+src/tests/testMem
+src/tests/testNetDb
+src/tests/testRefCount
+src/tests/testRock
+src/tests/testSBuf
+src/tests/testSBufList
+src/tests/testStatHist
+src/tests/testStore
+src/tests/testString
+src/tests/testTokenizer
+src/tests/testUfs
+src/tests/testURL
+src/tests/testYesNoNone
+src/unlinkd
+test-suite/debug
+test-suite/ESIExpressions
+test-suite/mem_hdr_test
+test-suite/mem_node_test
+test-suite/MemPoolTest
+test-suite/splay
+test-suite/squid-conf-tests
+test-suite/STUB.h
+test-suite/stub_cbdata.cc
+test-suite/stub_debug.cc
+test-suite/stub_fatal.cc
+test-suite/stub_libmem.cc
+test-suite/stub_MemBuf.cc
+test-suite/stub_SBuf.cc
+test-suite/stub_tools.cc
+test-suite/syntheticoperators
+test-suite/VirtualDeleteOperator
+testHeaders
+tools/cachemgr.cgi
+tools/cachemgr.cgi.8
+tools/CharacterSet.cc
+tools/CharacterSet.cc
+tools/helper-mux/helper-mux
+tools/helper-mux/helper-mux.8
+tools/Here.cc
+tools/MemBuf.cc
+tools/purge/purge
+tools/squidclient/squidclient
+tools/squidclient/STUB.h
+tools/squidclient/stub_debug.cc
+tools/squidclient/stub_libmem.cc
+tools/squidclient/test_tools.cc
+tools/squidclient/time.cc
+tools/STUB.h
+tools/stub_cbdata.cc
+tools/stub_debug.cc
+tools/stub_libmem.cc
+tools/stub_mem.cc
+tools/test_tools.cc
+tools/time.cc