IronPort-PHdr: A9a23:dfzt2ReEMCAUjoK3eyOeuyxJlGM+99jLVj580XJGo6hDdq2yuYnkP
               Qnf6PRhgVvDUJ/Urf5J2KLNq661f2sG7N6atWwaNoRWXkoHjt4bhwxmH9SEBk3nBPvtdSo7G
               stZSFZ/pTewNg5IG5W2fEXc91u16zNaARDjLUxwL+XxFJTVipG10Pu/452VfB9JizqhSbZ1N
               hO3qwrKqsAM281pLeAsyUiBuWNGLsJRw24gPlePh1D868O3qYZk6DhVsuk9+tRoVKz7e+EnV
               +UdAmh/dW8y48LvuF/ISg7nCmI0dGIQn1IIGQXB5QC8Q5Hw9yv3t+Zw3COXJ8KwQb1mETKlp
               7xmThPlkkJlf3Yw7X3Xh8psjalavAPpphpxxJTRaZ2UM/w2d73UfNcTT25MFshLUCkJDoS5Z
               ooJR+0PWIQQ54v6vFYWrV2hHwijBP/HzzhSgH7w0rYm2v57VwrBmhEjXpoPvHnSsNTpJfIKS
               +nmqcuAhT7Hbv5QxXL88N2SKkFn8azKB+gpN5aImgE1GgjIj0uds9n/Mjecx6IQtWne7+dhW
               e+rgWM9pEd9r2vKpI9kh4/Xi4YS0l2B+z9+xdN/J9qjRVZ7J8G+EZRQqwmfMJFwQ8UtWH1ho
               nx8wbpApJ3xL01ogNw3ggXSbfCKad3C4BX4Wf6RZyhihX1lZJq6gAy08E6v0fH1TJPy21EMs
               ykPwbyu/jgdkhfU7MaAUP50+EysjC2O2w7k4eZBOUkolKDfJvbN25YWkZwe+QTZEyv/iQPri
               q7Tdkgl9uWs4en9bfPqq83UMYg8kQz4Pqk0/673Se0lLggDWXSa8uWgxfXi+0P+WrBDkvwxl
               OHQrpnbIc0RoqPxDRVS184v7BO2DjHu19p9/zFPLlVedQqHyZfzOl7OPNj9Cu25glKjiyti3
               aqANbqnH5aMZnnPnbH9fKpsvktVyQ4919datPc2QvkKJPP+XFO0tcSNVEdodVzphby9UZMhj
               9BWQ2+ED66HPbmHq1KM7/NpPu+NIY8YuTrwL/Io/fGogXJq/D1VNaSvw5YTb2i1W/p8JEDMK
               3jrmdoZESEVpAsxTPDCjVqYVz9VaG2uVrhmoDo8Tp+lR9SmJMjlkPma0SG3E4cDLGJBEV2UE
               TH3bYSLW+skbSWIJM5nnScYXKL7DYQmkwyt/lyfqfIvPq/f/SsWsojm3d5+6rjIlB08wjdzC
               tyUz2CHS2wccnogYTgw0eg/u0F5w0bFzK55xvxVFNBe4/lESAh8OZOOh+p9Q8v/XA7MZLLrA
               B6vX8mmDDctT9kw385GYkBzHM+nhwzC2CziCqEclriCDpg5uqzG2H25K8F4wnfAnK4v6jtuC
               tNILnGjj7Vj+hL7AofIlwCGjf/ve/hFmiHK82iHwCyFu0QZGA98XKPZXGwOM0vbqdOqgyGKB
               7SqCLkhLk5A0ZvYcvoMOoCv1w8fAqu6a5zEbmm8mnm9H0OSy7eFfcz3fWRY3CjcBEUAmQ0J8
               jCKOFtbZG/prmTAAThpDV+qbVnr9Lw0qnSgQ1c0iR6QbkJhy5Kw/QQThPqTUO8axOhCsyBnt
               jY+TzPfl5rGTsGNoQZsZvAWedQm/FJOzn7UrSR4N52kar943xsQL10xsETp2BF6TI5HlIJ5y
               RFihBo3IqWe3lRbcjqe1p2lIbzbJF75+xW3YrLX0FXTuD550qII8vI5rVr4oAizTAwp9DN60
               IsNu5N9zpDDDQ5XToioF0hrrl51oLbVZiR77ITRhyUE2UyctzjY3dMvC/A5wwz6OdxYdr6HR
               leaLg==
IronPort-Data: A9a23:r/atr6zndM6ISg7bNox6t+eXxirEfRIJ4+MujC+fZmUNrF6WrkUAn
               2EbXG3VPvqOYGrwfIp/bYu28EsCusXUmNExHQBo+1hgHilAwSbnLY3EcR2gYX/6wu4v7q5Dx
               59DAjUVBJlsFhcwnj/0bv676yMUOZigHtLUEPTDNj16WThqQSIgjQMLs+Mii+aEu/Dha++2k
               Y20+5S31GONgWYuaTpLsfPb8XuDgdyr0N8mlg1mDRx0lAKG/5UlJMp3Db28KXL+Xr5VEoaSL
               woU5Ojklo9x105F5uKNyt4XQGVTKlLhFVDmZk5tZkSXqkMqShreckoMHKF0hU9/011llj3qo
               TlHncTYpQwBZsUglAmBOvVVO3kWAEFIxFPICUiSnt6a3nTDSWr1ntZBFB9qHqwl8PkiVAmi9
               dRAQNwMRhWKhubz36jiD+cw34IsK87kOI5ZsXZlpd3bJax+ENaTHuOQv4YegG5YasNmRZ4yY
               +IbbiFidBSGfAdONVcLIJc5huGpgHbkbzRC8hSeouwq4AA/ySQriOm1aYSKK4XiqcN9wl+5v
               ljm02HAGD40DMfPjhmq21+0mbqa9c/8cNtKSOfQGuRRqHm6+kEjTTk+UVqgveK0kFD4RtReb
               kwZ+yYjqaI/7kPtQtSVYvGjiHuNvxpZRMAJVuNmsUeCza3b5wvfDW8BJtJcVDA4nP8bai4jx
               2aMpcLwWB9AqOPJalOg/KjB+FteJhMpBWMFYCYFSy4M7N/ivJw/g3rzojBLQP/dYjrdSWGY/
               tyakMQtr+5M0pNThs1X6XiC0m38/MGYJuIgzlyPBjrN0+9vWGKyi2WVBbXz6P9BKMOGVADEs
               iRd3ceZ6+8KANeGkynlrAQx8FOBtq/t3N702wYH83wdG9KFpSXLkWd4vmoWGauRGpxYEQIFm
               WeK0e+r2LddPWGxcYh8aJ+rBsIhwMDITIq0Dq2KP4IVPMYvLmdrGR2Cg2bAjggBd2B8wckC1
               WuzLK5A8F5AWfk5kGToLwvj+eZwnH1hrY8seXwL503/jeD2iI+9RrACP1+DBt3VH4vVyDg5B
               +13bpPQoz0GCLOWSnCOreY7cwpWRVBlXsueg5IMJoa+zv9OQj5J5wn5muN/JeSIXs19yo/1w
               51KchQAkwah3SSWdlrih7IKQOqHYKuTZEkTZUQEVWtEEVB6CWpzxM/ztqfbfIXLMMRmxP9wC
               uYfIoCOXq0JRTPA9DAQK5L6qeSOsfhtaR2mZ0KYjPoXJvaMhDAlPvfheRHp9S8BFTa+r5F4q
               LrmywCzrV/vgeh9JJ6+VR9spm9deVAYn/h0Xk3HOcVaYh+q+48sNi+ZYjrb5S0TAU2r+wZ2D
               zqrPCo=
IronPort-HdrOrdr: A9a23:wycv365eNYXYvSNT0gPXwBTXdLJyesId70hD6qkRc20vTiX8ra
                  uTdZsguyMc5Ax9ZJhio6HlBED4exLhHMdOgbX5Xo3SPjUO2lHYVL2KhLGKq1fd8kvFh4tgPM
                  xbHJSWZuedMbE0t7ec3OAUKadH/PCXtIqTraP1yXN1SAFjbKttqz1+Fh2QHiRNNWp77N4CZe
                  Oh2vY=
MIME-Version: 1.0
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:102.0)
            Gecko/20100101 Thunderbird/102.13.0
Content-Language: en-GB
References: <e04314e7-2c7c-9832-4e94-ae6ed63f7953@nag.co.uk>
            <cdf0f0b4-fec2-db51-36fb-7f578b8bdfcf@morningstar2.co.uk>
            <ZMPiT40+/5h25GY5@polynum.com>
            <f1b86bed-c65e-e919-b5d1-402f265b4d07@morningstar2.co.uk>
            <9bdba073-3e55-a6b6-f95e-9d4a2eb007ca@morningstar2.co.uk>
            <ZMP6IgKkhS3pdsP+@polynum.com> <19vogp84f1o55$.dlg@nililand.de>
            <ZMQF9IObP2zeUd+Q@polynum.com>
            <CANfjC0-9uEKsuhNVA24gXCkSvLxYeBY_a+w83XTt+WfMC5NLpw@mail.gmail.com>
            <93aac629-c5ad-fcaf-4453-f8a91fb0327e@nag.co.uk>
            <ZMSns0uiNun99J8a@polynum.com>
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 7bit
Message-ID:  <d18bce1d-0945-f845-1db9-85a36717da2a@morningstar2.co.uk>
Date:         Sat, 29 Jul 2023 08:07:54 +0100
Reply-To:     Mailing list for the LaTeX3 project
              <LATEX-L@LISTSERV.UNI-HEIDELBERG.DE>
Sender:       Mailing list for the LaTeX3 project <LATEX-L@LISTSERV.UNI-HEIDELBERG.DE>
From:         Joseph Wright <joseph.wright@MORNINGSTAR2.CO.UK>
Subject: Re: "new" \input vs. primitive behavior
To:           LATEX-L@LISTSERV.UNI-HEIDELBERG.DE
In-Reply-To:  <ZMSns0uiNun99J8a@polynum.com>
Precedence: list
Envelope-To: <rainer.schoepf@gmx.net>
UI-InboundReport: notjunk:1;M01:P0:cxCMWyFOMlQ=;3WLW5Yi8pl5xBd9W7Z4I8T/KFSTf
 HQe/vdTI2CiyacLQa51QQFymtg9E5K8WjVWXKzJUdPSeVtJADEszm3jNQRGc6SENZqp68p3+B
 qWVwmHUF/+DHZ8P+4TOlxKT6vS4L764NUuPc5FHBPFYLi+kLn23XQyXNQSVDUhkLL34lTDlTQ
 r4wICnmdmxCb2FOuXnsq2R5XbgLc4Ia+7+10+Q4jN9e6J8h7AStK/yTuHenIsWE2aKTBSxYBr
 n24TvHGnIXeS0EcLEx21Ban07tZB+fGVTxsrpGZSSUPxIHs39WNWqgfTuNzC5FMwOXAbwtUL8
 +87Vjz5TqXYCIzKflINF0N2zEkC/XA4XXt/UOF5xTCJCYrollcU7tYMlrsO2n72utkxIBICDw
 1V6QwPf30KBQVdw3VVQqE+wywIw86ucYzKa6u3eOXdhRTHh5uL3sspATEftAMsdjCLztcQmoQ
 2+5dRCNyCdrIK0lLLivKT3iTkKkj45+FjUdbEVXebawKVs4ue9KXE3Y9YNhj3QwIz6rb48S3R
 ORqw+tbFE9E7Rk4QFf5OncLFUlYR+NJgNKf+YGEsXM6uZNn1lYW5z8HTuQwv4aZbrkcsTTOD/
 Uiz4/4iqlTWqAln1/S3pXHEcbO3cMAEPgEsqMgwA22vrTp+Dw2pC+KmQ5d+EtPlr1M3P7PWMQ
 qcrdxwRKSHsv8YOppsCXdb+P7yYpyLe+iJICo6uouKKyAf2gcP0TTK+QFCIu8adDFGdBkr6HJ
 DI7RMM8XRLLq7+X4DItmqJlCwVZdC7fDtaeW4ayAzlxbhknBfJNRHpteWkvPpsE4XkmWEOS6S
 G7iYiS1u6xZVQOWpkuR68fjqbezAAnLgou16IwS8p0w0RtbPpiVKp8lfR1TxyQis79andUOi0
 tmoHTHaJ6XouZGsHFJdTorr4wrj8YxwFDFAncRz5VzFOTDaUbJCwZ03kPPcq8/dMUsl/xHfUJ
 ROe5xV/Se2Y0fTzlhQTXJ8E6uagBze8X1igF1bQjN3+fKZqfniwbx+5k1f9YHlebLogZD5+fl
 XwJi47r+3jpqq8RPATXKPPjV/VDp8vXHRtwFrjUgjtsbS87Juav+7X+XD7GsR7eiIQErbw2td
 0qdkWBOWt19OowJKS5T0K7U0JDVg9EOYE+bhtd+TDMylIAMiwdJBj/VCWGk1w+kzl+CqqLApV
 I3VevWQEzcoEQvLl+tVlH1TFaXsv+hO5JtmGzEEwolB6elz8eCR1SRm1SPkTD36lsjg6VFevZ
 t/NKEmh2h6LZFfyIfW6il3IeebI+Nu48Dy2o2bJVyo29EgsF065zpChgP0fC+7whCF7nnOyAL
 teaO7HuSA8w9+GF3y0U1CGdPLiPIzrBA3MhTN6XSzTXcqHFQMU8IqaXuaOl28X3fYeYUlLo6U
 Uen5drGFDXAgfUPaXu/MrJGgY9uK+UDxehTJ14IeUVs0e0xnxAU6S5rrboKS497cUogOlbsoj
 CdQxNVqGwdf8197qK4q8cHO3lrRUuBWIBk+5zzPH2PhG9rYBsbh4IiNbdbWiuJ5Kv/CPSNXxJ
 /Lvl5rSUkTtC/iQEBy6CLxxJ0BacipKA79p6cD2fDmtO/TMNdScGObFGmS9J6p8fmih3S2E9p
 tbDuhGUD7EPlaGuACLPLoKznnqbxEH66jjKwgrr7IxnM/SvQ42PRrF4t50VO239J4E8IUrGIw
 k0NrZaRuWylkpUtDWKlwhhOneShAQRD9Y3BCbYGp3N+8lF34ZAgI9NogzRUO+8UhQ5DPcqKtp
 5S9HqG5EkQ4MIr1mtmS5vADITqmlDJfTRhv697LWeycxDJqxLDVuBSC/gjZ6kgY59IAE1xvKg
 0Jgs5gXRL3K2yqMTBjIhqn+B7oT0kDFNRzmQ+JPMLFMjKT+i60U6p75JsB+l1P2VB7q3w0G68
 b0nVqtSzM1+1YSpI2F1F1eSnVpMd5G4fKVZ7IQHfDd7Ooo+JAEjSbeyqUDpb2r45xexctb8HZ
 742fa4t/Dth2ytpn0Gt6zjLTitWzXTcY4bynJ5hfkiGrwmCrTmnv3aYGJiYZ+L9BVoMcoTcJF
 v0DUt/cpkAcXRGBrQHeixkCo6gWcl0GbprfEImEgx2wizr0ZLZCCDnaXzuU39TQwMJXyeo2ir
 bRRn78bGdJsNIpBc8BHjSX5iMjN2bRYvSt8OibdiZJQ24Q3IrOW8FeV0yI30Tk8O5mi00cWeE
 A0uqQw3u0FlzAkzt6aUX9uue2Q3Vvt2KSO9Ve8zOJ8axO4IYrm/OTchCR2w4WgSdPTjDcE4OK
 Xi7JWzhUwVeQlACz8o0/pqqJqf5rjob+xobClqmUQRDiztGubuQwSW3dLMyhtuSVBCQHuXI1t
 5lzya4aUAVToyk3ZYw717mnBqmnSrI7h71qc7IhfrtBBYmDk9cWDdx/Mr/6Bl1o5xVyqYkmyE
 DzSryWmPspK/M8IAhAAuSFwKAVdtfG/W1rib5VApcnwzY3bYxOIn5Fdb018lYxO0G+R0TVWB7
 dOldEjRbVEQZy7p3rOFWcWXTjDyRymVlvxJqhV7JLnddudNR0kR+sw2mJQxnctO/9nOtXMznx
 kZWJuXpigLDJ2lpxNzFVvk+w4s7zKthD3Y+tmUsCYoaPPBDIjhJBkhXXLzyRRpDmRl5lPxYln
 6KiiQl72IjVFuBNatkddnH3QCHy/fOLnqukTqPhWkfx+duzrbxPmcwGbG3Vry31/AYKBc/h5Q
 0pjbJXtSdfu2denm+3LNXPxxzLStdP08NDq5xzjRBVFDXoyBuQLSVXV/2N9kTDycTLcO//bnU
 smwMRazg/F7tl5J/vtFOY9HBRP+EoMkVHVFGmKItX/G/G9D+2JpWRR73Q9Zj3UBNdFKS8dTf2
 4bVhg8EkWSjR+gw8sHbAdsA97t3FpIYelsl/tJ4v1vVtkzizl57+1Y+Yry6ZJNfcL3bv7jLpQ
 W2GTjgr7H4Ij7SanyIc+5qAsxaAQ7U4+mCm9BI3dKpb7Lktx8XyVKwG+/pf0iSCT/7gdX0ZJO
 GdHJ5ynV9ioW0HuUW2qm03SvOFyPe2E+ESkre39j64MptWT7OgB597f9h3Aj8Bemt79GjRAJx
 35tlxg8ird0owbYuJ05xLJFiFCY9EcjbULHPC6U7bRxGabTbMDufdpAFQDs6j2gKxOqQUUNeN
 UfSUoqVkLyWC38jXJE7GY0Zn6P2Dh0GP3pZ/DU9TemCsnC8eCIns2PIrPEyXvopsccrVlnqo6
 pYOJk9ehisOsCWBD/tUc40HwIjgRDoadbL/e1FAoKNEmrUvIXZ5vMr4d3eMT9cfgUN1Ov1Exs
 UIvPCoxIIkdusl870HzAiAEzeY052dKsxJ3+76cazblvyyXdB5vDz5SrezZ7Ue+TX9KQDK4Up
 vMK6L/oGUZsyeKW2wehI1OB6PHhiqhz/gNRKgOdy528RgAVH20aOyFz8Un4OChh/d9dPjahew
 mPnyYI3K7fh5tCJL7uFcmy9opeA9bCxJTmuUVaNdAOFUhegY8JrWAdra/yyqE0h9sCYZL32wU
 ybB1R3QpOt9vPNqbzE9C3zymn7uj4uBUW8N0QyI1U/hRxyyXMSt3ZOulfK3HihE9JrhPb+leg
 6R/cHR86K3tByXEALpnOkeId6SCsHjW9ptXmEn3B+U2agkmkbrRLfMJ0dRpC7QVDisZJTejLy
 OW8PCzbFotiMKwNKSQGAb2z1/Faq8xr0r9XX2Mn745vsrYuBtbj7E4USlJf0/xLj2UeLe5zDC
 Gi2JltW6LzLuT7Z1ShdFhhiKqNMESu5IYvVzDjtbWW1nBV26qc8pEpmUQnhzq75/hMB/TW2VQ
 Qu9zFRRMvOhoMKKzv12bpTvOXuE1SzLiyNEdhlCxI5h04JRHkm+qGz4xSTELDLqlRPO08ulk2
 xfXGvhLsNTXZKz0vi+pYxr8WmGPMXWC9KnrPO+2lq3ekYS4mmEQzDj0x84QUOf1nIeZYw8weK
 5bI226MOo1aXHM447LxCDzt8MAWbgtzy6krsW5GZqJp8OLPtRj9847zj6f3iMDMuvMiEQ3P+q
 bls4Spg44QFZN7DqVgMLlSvy9PgDaMEO1X+/atFKTwcsiAoCs3fuqlkvFleWWL1bi92Y/cQxr
 yb3gQyqURuDFwno7/slHccGM7IboEsQJhJ0/q7AQ7D+fGSvArb3lJDolsztSCGvznKCuytV6G
 jIXAoeDJ9h9lT/5sr4asZQQcneE9A9eq4k+Bb0//WoM5ELIE/Rfo7/Ymoug6na1JY7tWsJMGX
 N2KJeVQP4V6ML4k2fBjd4BdG+HjBUGhdOonqnO8cpK3rnZ7M9sodI0s1EVyL+o/YEKwShb1CI
 tOkCqMk02OncZCzgUni09cBwN4jp3/FzU77MdKD3JoFDAYTjCY3wPLJlNn8g030RWTd5F+UYG
 EFgM5tPXM31U3lwkO6bNhBZwWydpVZ+omlLOIxhtqiXyvh5qUzm5YVh8E6a3A9dlpeWQ6usOL
 RlJKir9UXOTFTx1ctKnRGVJDb2GA6YEzr9sY8da4k/MMBN0HdUFggAs/nDzbvjzHdvVMaRkSE
 FbO2USqUIO98PNqm3FmP8zxwfiY0RSVGlI+CiJTqs0mXfw5+u/XyRdt64NSrfe9vi1tooXdHm
 AidDB92zeFMpSh+FFAtHm1FU=
UI-OutboundReport: notjunk:1;M01:P0:weYcq4bYd8Y=;k5Y/PQ/J753aZmBdEhagAqm6qXQ
 WEGdNKHSKdQSoCHg2KXRekB3Vx4nccEM6zvBOIgnImsK7pelkcNUFeJ3vrOXKpSyLynZ4hsK0
 rUIuJdb5Oi/BFcBGJ7MyJx5cttLmS8mSHKvOWorvVx/wAxjinK5HHfCCi66YaPCgIsPi4hADG
 AfltTpqx6f9z+E4ibQJCq4tDY2kXbZrvn92NWuBseJCOtBRoTiyZl6F6PeBrO4jnlLg4psq4Q
 JjHwkvywBBQct7sg2StDE/Gf/7x7ATT/XsGru/vEYNYRPPUSu9IDi3ooNGPYh/7LsU5+YTpTp
 e2DxPsBepv6KYcyi3uMuQUZVtk2gkd7O2HlpZQ335CsxgpU3NaAX/FBPe7/AMlJp9RRMzVRzF
 hYqHI4EW2cc0TAgSd4tpushwn/eq6+R0sykmUv7ouD3czjA8pvvvYNRQrvrWzABdFJThs2VX+
 AXKSVe9cu8fIOpgSUpuHqzXAfloyBjSQkgjGg037/6OvzipdLAVpaBhLkGFNmhru7BEw6WTHo
 AztMAnZ5Re/OtWXYEFmWK25tAKMCqsesjHOk1QHSk6abja21sBf+yVzYTpss/PCiRmVOJ7jQn
 UwxRA1NCypU+bSeNg8VCjxqnOjoLqmoJQPck0ntMa5BtBkVNl69yomSMX4TmK3kUB/XpSzMki
 r71qFs/26i4xubgj7LcAs4PBeHuQ3xT/Ej8aFuBgjGCEbm6bcuGSoZcvxjlUeY0h9Q3ImVV1N
 hHO2znFt1fb
Status: R

On 29/07/2023 06:46, LARONDE Thierry wrote:
> On Fri, Jul 28, 2023 at 08:31:53PM +0100, David Carlisle wrote:
>> On 28/07/2023 19:48, Phelype Oleinik wrote:
>>> because the lookup first checks the name as given
>>
>> actually no.
>>
>> For extensionless files .tex is looked for first  (so readme is not
>> accessible if readme.tex is blocking it)
>>
>>
>> % If this option is set to true, `tex a.b' will look first for a.b.tex
>> % (within each path element), and then for a.b, i.e., we try standard
>> % extensions first.  If this is false, we first look for a.b and then
>> % a.b.tex, i.e., we try the name as-is first.
>> %
>> % Both names are always tried; the difference is the order in which they
>> % are tried.  The setting applies to all searches, not just .tex.
>> %
>> % This setting only affects names being looked up which *already* have
>> % an extension.  A name without an extension (e.g., `tex story') will
>> % always have an extension added first.
>> %
>> % The default is true, because we already avoid adding the standard
>> % extension(s) in the usual cases.  E.g., babel.sty will only look for
>> % babel.sty, not babel.sty.tex, regardless of this setting.
>> try_std_extension_first = t
> 
> I suppose that this behavior is in LaTeX code, not an engine?

That's from texmf.cnf, so affects most engines. (LuaMetaTeX like 
unaffected: I'd have to check.)

Joseph