From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from secure.elehost.com (secure.elehost.com [185.209.179.11]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 19269351C27 for ; Tue, 1 Sep 2026 21:55:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.209.179.11 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788299711; cv=none; b=FdZnBylimFDyHSJX1Fb7foF+fXCatoGhzgvgddcizL4ukI78NG0E7VBrdSwtKMvpxJtF+cnL4dfpo+Vc+7ZHJj2h0ubN9kIY3nWMmp2bUY/tXfJnP0WlyTGMaZl07lzezQjo+9b0J22JTqI5XCqgPUQ6Q08hv+KY22SqKc3Z5Ds= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788299711; c=relaxed/simple; bh=b6pWsla4JPa0X5H3sxdbQDXsbFAAUDGARLoPoCbsp/Q=; h=From:To:References:In-Reply-To:Subject:Date:Message-ID: MIME-Version:Content-Type; b=dMPsFEwAwkKXqPFhH+qFeanXoKVYyQvp6/qvxgiiN4H2Or6ZQjIc0ZCa0kbZp1AgnkAbpAY0WV/FZK/kuwMEdPqCCdr+Psc7lJuzJyo3I5Ld1hGq2mUBoR0/SUV+1iNj1Nos1wJNqbLyfoOelhS1SJ67uMTbSGsy1i5I1JeNXqY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=nexbridge.com; spf=pass smtp.mailfrom=nexbridge.com; arc=none smtp.client-ip=185.209.179.11 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=nexbridge.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=nexbridge.com X-Virus-Scanned: Debian amavisd-new at secure.elehost.com Received: from Mazikeen (pool-99-255-187-253.cpe.net.cable.rogers.com [99.255.187.253]) (authenticated bits=0) by secure.elehost.com (8.15.2/8.15.2/Debian-22ubuntu3) with ESMTPSA id 681Lji01024735 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 1 Sep 2026 21:45:45 GMT Reply-To: From: To: "'Skybuck Flying'" , "'Git'" References: In-Reply-To: Subject: RE: AI Textconv filter misconfiguration on Windows leads to silent corruption of diff output (ongoing investigation) Date: Tue, 1 Sep 2026 17:45:38 -0400 Organization: Nexbridge Inc. Message-ID: <000601dd3a5b$3e4be8a0$bae3b9e0$@nexbridge.com> Precedence: bulk X-Mailing-List: git@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Mailer: Microsoft Outlook 16.0 Thread-Index: AQG/A74nuxZ9S0nr6fdPAV8IovWWEQKY/cdqAdcK/JwB4Zs92AGG/tONAULMUxa2rc9REA== Content-Language: en-ca msip_labels: X-Antivirus: Norton (VPS 260901-8, 9/1/2026), Outbound message X-Antivirus-Status: Clean On September 1, 2026 4:14 PM, Skybuck Flying wrote: >MORE GOD DAMN PROBLEMS WITH GIT AND CR/LF FILTERS. > >I DOWNLOADED/GIT CLONED: > >https://github.com/openai/openai-openapi/tree/main > >I NOTICED: > >https://github.com/openai/openai-openapi/tree/main/assets > >WAS CORRUPTED. > >(CORRECT DOWNLOAD METHOD USES TO PROVE FILE IS INTACT ON SERVER): > >curl -L --output "K:\Delphi\Specifications\OpenAI API\github version = 3.1.0 (1 >september 2026)\assets\openai-api-referencev2.png" >https://raw.githubusercontent.com/openai/openai- >openapi/master/assets/openai-api-reference.png > >GOOD THING I INSPECTED IT JUST OUT OF CURIOSITY. > >I IMMEDIATELY EXPECTED GIT FILTER TO BE THE CAUSE. > >DIAGNOSIS COMMANDS. > >" >Microsoft Windows [Version 10.0.22631.6199] >(c) Microsoft Corporation. All rights reserved. > >C:\Users\skybu>git config --global core.autocrlf false > >C:\Users\skybu>git config --system core.autocrlf false > >C:\Users\skybu>git config --local core.autocrlf >fatal: --local can only be used inside a git repository > >C:\Users\skybu>git config --global --get-regexp filter > >C:\Users\skybu>git config --local --get-regexp filter >fatal: --local can only be used inside a git repository > >C:\Users\skybu>git check-attr -a openai-api-reference.png >fatal: not a git repository (or any of the parent directories): .git > >C:\Users\skybu>type .gitattributes >* text diff=3Dlfclean >C:\Users\skybu>git config --global --list core.autocrlf=3Dfalse = core.eol=3Dcrlf >core.sshcommand=3DC:/Windows/System32/OpenSSH/ssh.exe >core.attributesfile=3DC:\Users\skybu\.gitattributes >user.email=3Dskybuck2000@hotmail.com >user.name=3DSkybuck Flying >user.signingkey=3DI:\Informatie\Van mezelf\SSH = Keys\PrivateKey\GitSigningKey >gui.recentrepo=3DV:/FuckingWhore/vite-wallet >cinnabar.version-check=3D1743733941 >credential.http://localhost:3000.provider=3Dgeneric >includeif.gitdir:V:/AI0001/.path=3D~/.gitconfigs/.gitconfig-ai0001-v2 >includeif.gitdir:V:/AI0002/.path=3D~/.gitconfigs/.gitconfig-ai0002-v2 >includeif.gitdir:V:/AI0003/.path=3D~/.gitconfigs/.gitconfig-ai0003-v2 >includeif.gitdir:V:/AI0004/.path=3D~/.gitconfigs/.gitconfig-ai0004-v2 >includeif.gitdir:V:/AI0005/.path=3D~/.gitconfigs/.gitconfig-ai0005-v2 >includeif.gitdir:V:/AI0006/.path=3D~/.gitconfigs/.gitconfig-ai0006-v2 >includeif.gitdir:V:/AI0007/.path=3D~/.gitconfigs/.gitconfig-ai0007-v2 >includeif.gitdir:V:/AI0008/.path=3D~/.gitconfigs/.gitconfig-ai0008-v2 >includeif.gitdir:V:/AI0009/.path=3D~/.gitconfigs/.gitconfig-ai0009-v2 >includeif.gitdir:V:/AI0010/.path=3D~/.gitconfigs/.gitconfig-ai0010-v2 >includeif.gitdir:V:/AI0011/.path=3D~/.gitconfigs/.gitconfig-ai0011-v2 >includeif.gitdir:V:/AI0012/.path=3D~/.gitconfigs/.gitconfig-ai0012-v2 >includeif.gitdir:V:/AI0013/.path=3D~/.gitconfigs/.gitconfig-ai0013-v2 >includeif.gitdir:V:/AI0014/.path=3D~/.gitconfigs/.gitconfig-ai0014-v2 >includeif.gitdir:V:/AI0015/.path=3D~/.gitconfigs/.gitconfig-ai0015-v2 >includeif.gitdir:V:/AI0016/.path=3D~/.gitconfigs/.gitconfig-ai0016-v2 >includeif.gitdir:V:/AI0017/.path=3D~/.gitconfigs/.gitconfig-ai0017-v2 >includeif.gitdir:V:/AI0018/.path=3D~/.gitconfigs/.gitconfig-ai0018-v2 >includeif.gitdir:V:/AI0019/.path=3D~/.gitconfigs/.gitconfig-ai0019-v2 >includeif.gitdir:V:/AI0020/.path=3D~/.gitconfigs/.gitconfig-ai0020-v2 >includeif.gitdir:V:/AIMain/.path=3D~/.gitconfigs/.gitconfig-aimain-v2 >merge.tool=3Dmeld >mergetool.prompt=3Dfalse >mergetool.keepbackup=3Dfalse >gpg.format=3Dssh >commit.gpgsign=3Dtrue >log.showsignature=3Dtrue >gpg.ssh.allowedsignersfile=3DI:/Informatie/Van mezelf/SSH >Keys/GitAllowedSigners/GitAllowedSigners.txt >diff.lfclean.textconv=3Dsed -e s/\\r// >diff.lfclean.binary=3Dfalse > >C:\Users\skybu>git check-attr --all -- openai-api-reference.png >fatal: not a git repository (or any of the parent directories): .git > >C:\Users\skybu> >" > >HYPOTHESIS BY CO-PILOT AND POSSIBLE FIX: > >The **smoking gun is now visible**: your global config + your global = attributes file >**are applying a custom diff filter (`lfclean`) to *all files*** = =E2=80=94 including PNGs. >That is exactly why your Git=E2=80=91downloaded PNG is corrupted while = the curl version is >intact. > >Let me break it down cleanly and give you the exact commands to verify = every part. > >--- > >## =F0=9F=8E=AF Core finding: your global `.gitattributes` is rewriting = files You showed: > >``` >C:\Users\skybu>type .gitattributes >* text diff=3Dlfclean >``` > >This means: > >- `*` =E2=86=92 **every file**, regardless of type >- `text` =E2=86=92 Git treats **every file as text**, even binaries >- `diff=3Dlfclean` =E2=86=92 Git applies your custom diff driver >- Your diff driver is defined as: > >``` >diff.lfclean.textconv=3Dsed -e s/\\r// >diff.lfclean.binary=3Dfalse >``` > >This forces Git to: > >- run `sed -e s/\r//` on files >- treat them as **non=E2=80=91binary** >- strip carriage returns >- potentially corrupt binary formats (PNG, JPG, ZIP, EXE, DLL, etc.) > >Curl does not run Git filters =E2=86=92 curl file stays intact. > >Git does run filters =E2=86=92 Git file becomes corrupted. > >This is 100% the cause. > >--- > >## =F0=9F=A7=AA Commands to confirm the corruption mechanism > >### 1. Check what attributes Git applies to your PNG ``` git check-attr = --all -- openai- >api-reference.png ``` > >Expected output (because of your global `.gitattributes`): > >``` >openai-api-reference.png: text: set >openai-api-reference.png: diff: lfclean >``` > >If you see this =E2=86=92 confirmed. > >--- > >### 2. Check the raw blob stored in Git (to see if corruption happens = on checkout) >``` git show HEAD:openai-api-reference.png > raw.png ``` > >Then compare: > >``` >fc /b raw.png openai-api-reference.png >``` > >If `raw.png` is intact but the working=E2=80=91tree file is corrupted = =E2=86=92 the corruption >happens during checkout due to filters. > >--- > >### 3. Show all filters Git knows about >``` >git config --show-origin --get-regexp diff git config --show-origin = --get-regexp filter >``` > >You will see your `lfclean` diff driver. > >--- > >### 4. Show your global attributes file path ``` git config --global = core.attributesfile >``` > >It points to: > >``` >C:\Users\skybu\.gitattributes >``` > >This file is applied to **every repository** on your system. > >--- > >## =F0=9F=9B=A0=EF=B8=8F How to fix it (choose one) > >### Option A =E2=80=94 Remove the global `.gitattributes` (recommended) = ``` del >C:\Users\skybu\.gitattributes ``` > >### Option B =E2=80=94 Restrict the rule to text files only >Replace: > >``` >* text diff=3Dlfclean >``` > >With: > >``` >*.txt text diff=3Dlfclean >*.pas text diff=3Dlfclean >*.dpr text diff=3Dlfclean >``` > >### Option C =E2=80=94 Mark binary files correctly >Add: > >``` >*.png binary >*.jpg binary >*.zip binary >*.exe binary >*.dll binary >``` > >--- > >## =F0=9F=93=8C Why this happened >You created a global `.gitattributes` with: > >``` >* text diff=3Dlfclean >``` > >This is extremely dangerous because: > >- Git thinks **every file is text** >- Git applies your custom diff filter to **every file** >- Binary files get corrupted on checkout > >This is why: > >- **curl file =3D correct** >- **git file =3D corrupted** > >--- > >## =F0=9F=94=8D Want me to help rewrite your `.gitattributes` safely? >I can generate a clean, safe version tailored to your Delphi workflow. >Pick one: > >- fix global attributes >- create safe Delphi attributes >- audit all Git filters > > > >Apperently Co-Pilot now has the ability to send e-mails, funny = functionality, risky >too ! Expect another melissa ai virus soon ? ;) > >Anyway I copy & paste it's reply here in plain text: > >``` >Hi Git developers, > >I'm writing to report a reproducible corruption issue caused by global = Git attributes >and diff filters being applied to binary files during checkout. > >Summary of the problem >A PNG file downloaded via Git becomes corrupted, while the same file = downloaded >via curl remains intact. The corruption is caused by a global = `.gitattributes` file that >marks all files as text and assigns a custom diff driver: > >* text diff=3Dlfclean > >The diff driver is defined globally as: > >diff.lfclean.textconv=3Dsed -e s/\\r// >diff.lfclean.binary=3Dfalse > >This forces Git to treat every file as text and run a textconv filter = that strips carriage >returns. When applied to binary formats (PNG, JPG, ZIP, EXE, etc.), the = checkout >process produces corrupted files. > >Reproduction steps >1. Create a global `.gitattributes` file containing: > * text diff=3Dlfclean >2. Define the diff driver globally: > diff.lfclean.textconv=3Dsed -e s/\\r// > diff.lfclean.binary=3Dfalse >3. Clone any repository containing binary files. >4. Compare a binary file from the working tree with the raw blob: > git show HEAD:path/to/file > raw.bin > fc /b raw.bin path/to/file > >The working-tree file differs from the blob, confirming corruption = during checkout. > >Expected behavior >Binary files should remain untouched unless explicitly marked with = filters. > >Actual behavior >Git applies the global attributes and diff driver to all files, = including binaries, causing >corruption. > >Request >I would appreciate guidance on whether Git should: >- Warn users when global attributes force text filters onto binary = files, or >- Provide safeguards to prevent textconv filters from being applied to = known binary >formats. > >Thanks for your time and consideration. > >Best regards, >Skybuck >``` > >version 2: > >Here is the **clean, corrected, plain=E2=80=91text reply**, in a = **single code block**, clearly >explaining: > >- the **cause** >- the **solution** >- the **future risks** > >You can paste this directly into the Git mailing list. > >``` >Hi Git developers, > >I want to report an issue where Git corrupts binary files during = checkout when a >global .gitattributes file forces all paths to be treated as text and = assigns a diff driver. > >Cause of the problem >My global attributes file contained the line: > > * text diff=3Dlfclean > >Because the pattern "*" matches every file, Git applies "text" and = "diff=3Dlfclean" to all >paths, including binary files such as PNGs. The "text" attribute forces = Git to treat the >file as text even when its content is clearly binary. The assigned diff = driver runs a >textconv filter: > > diff.lfclean.textconv =3D sed -e s/\r// > diff.lfclean.binary =3D false > >This causes Git to rewrite the file during checkout, stripping carriage = returns from >binary data. As a result, the working-tree version of a PNG differs = from the blob >stored in the repository, and the file becomes corrupted. A copy = downloaded via >curl remains intact because curl does not apply Git filters. > >Reproduction steps >1. Create a global .gitattributes file containing: > * text diff=3Dlfclean >2. Define the diff driver globally: > diff.lfclean.textconv=3Dsed -e s/\r// > diff.lfclean.binary=3Dfalse >3. Clone any repository containing binary files. >4. Compare the blob with the working-tree file: > git show HEAD:path/to/file > raw.bin > fc /b raw.bin path/to/file > >The working-tree file is corrupted while the blob is correct. > >Solution >Remove the global rule or restrict it to actual text file extensions. = For example: > > *.txt text diff=3Dlfclean > *.pas text diff=3Dlfclean > *.md text diff=3Dlfclean > >Alternatively, explicitly mark binary formats: > > *.png binary > *.jpg binary > *.zip binary > *.exe binary > >Deleting the global .gitattributes file entirely also resolves the = issue. > >Future risks >Global attribute rules are applied to every repository on the system. = Using "*" with >"text" or any filter can silently rewrite binary files, break archives, = corrupt >executables, and cause difficult-to-diagnose data loss. Users may not = realize that Git >is modifying files during checkout, especially when the corruption is = subtle. A >warning or safeguard when "text" is forced globally might help prevent = accidental >misuse. > >Thanks for your time and consideration. Just some musings from my own frustration in this area. Having gone through some similar things, I would ignore CoPilot. There = are other words I would use as well but they are not for polite company. Set autocrlf=3Dinput not false. Also it is a good idea to set = ignorecase=3Dtrue and filemode=3Dfalse on Windows. Git tends to give preferential treatment to text files, only looking at = the first hunk (whatever that might be) looking for non-text characters. = CR is text, so a file containing those near the front will probably be = consider text unless explicitly marked as binary. If you are sure you = have binary files, declare them. Do not assume git will always get it = right - although .EXE, .ZIP, .JPG, and .PNG are pretty much always = binary. I am going to assume something there, that the clean/smudge and diff = engines are not guaranteed to be subject to autocrlf processing before = receiving the files. It might be or might not be, depending on what git = feels like doing given the state of the file. You would have to go look = in the code on the version you have to be certain, but don't count on it = in future. The other problem you may to face, and I have been there, is that = clean/smudge and textconv filters definitely *do not like* binary files = if not declared as binary, and sometimes even then. You are dealing with = stdin and stdout, so have to know how the filter/textconv is opening the = files. I have seen platforms that always open in "r" instead of "rb", = which was a problem. I had to hack around that using %f in textconv. I = have also seen people write textconv programs without awareness that = they might get binary data, and that blows up runtimes badly when you = hit a NUL in an input buffer after an fgets() in C. I wish you luck in your adventure. Randall