patch command incorrectly capitalizes filenames that live on external USB flash drives

patch command incorrectly capitalizes filenames that live on external USB flash drives

[Jason Gross]

Consider the following script in foo.sh:
```
#!/usr/bin/env bash

set -ex

cd "$1"
rm -rf foo
mkdir foo
cd foo
cat > Makefile <<EOF
a
b
c
d
e
EOF
cat > diff <<EOF
diff --git a/Makefile b/Makefile
index 9405325..86d2f8c 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,5 @@
 a
 b
-c
+ccc
 d
 e
EOF
patch -p1 -i ./diff
ls
```

If I run `./foo.sh /cygdrive/c/`, I get, as expected,
```
+ cd /cygdrive/c/
+ rm -rf foo
+ mkdir foo
+ cd foo
+ cat
+ cat
+ patch -p1 -i ./diff
patching file Makefile
+ ls
diff  Makefile
```

If I instead run `./foo.sh /cygdrive/h/`, I get
```
+ cd /cygdrive/h/
+ rm -rf foo
+ mkdir foo
+ cd foo
+ cat
+ cat
+ patch -p1 -i ./diff
patching file Makefile
+ ls
diff  MAKEFILE
```

My C drive is an internal SSD (NTFS), my H drive is an external flash
drive (FAT32).  I installed cygwin with the commands:
```
powershell -Command "(New-Object
Net.WebClient).DownloadFile('http://www.cygwin.com/setup-x86_64.exe',
'setup-x86_64.exe')"
SET CYGMIRROR=http://mirror.easyname.at/cygwin
SET CYGROOT=H:\cygwin64
SET CYGCACHE=%CYGROOT%\var\cache\setup
setup-x86_64.exe -qnNdO -R %CYGROOT% -l %CYGCACHE% -s %CYGMIRROR% -P
rsync -P patch -P diffutils -P make -P unzip -P m4 -P findutils -P
time -P wget -P curl -P git -P
mingw64-x86_64-binutils,mingw64-x86_64-gcc-core,mingw64-x86_64-gcc-g++,mingw64-x86_64-pkg-config,mingw64-x86_64-windows_default_manifest
-P mingw64-x86_64-headers,mingw64-x86_64-runtime,mingw64-x86_64-pthreads,mingw64-x86_64-zlib
-P python3
```

Running `patch -v` says `GNU patch 2.7.4`.  Note that this happens
regardless of whether I install cygwin itself on my external flash
drive or on my internal HD.

This came up when trying to run `opam install findlib` (which fails
when the home directory is on an external USB drive).

-Jason

Re: patch command incorrectly capitalizes filenames that live on external USB flash drives

[Thomas Wolff]

Am 28.04.2020 um 21:27 schrieb Jason Gross via Cygwin:
> Consider the following script in foo.sh:
> ```
> #!/usr/bin/env bash
>
> set -ex
>
> cd "$1"
> rm -rf foo
> mkdir foo
> cd foo
> cat > Makefile <<EOF
> a
> b
> c
> d
> e
> EOF
> cat > diff <<EOF
> diff --git a/Makefile b/Makefile
> index 9405325..86d2f8c 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -1,5 +1,5 @@
>   a
>   b
> -c
> +ccc
>   d
>   e
> EOF
> patch -p1 -i ./diff
> ls
> ```
>
> If I run `./foo.sh /cygdrive/c/`, I get, as expected,
> ```
> + cd /cygdrive/c/
> + rm -rf foo
> + mkdir foo
> + cd foo
> + cat
> + cat
> + patch -p1 -i ./diff
> patching file Makefile
> + ls
> diff  Makefile
> ```
>
> If I instead run `./foo.sh /cygdrive/h/`, I get
> ```
> + cd /cygdrive/h/
> + rm -rf foo
> + mkdir foo
> + cd foo
> + cat
> + cat
> + patch -p1 -i ./diff
> patching file Makefile
> + ls
> diff  MAKEFILE
> ```
You are throwing a puzzle into the mailing list and if you are lucky, 
someone may like to solve it.
But perhaps: can you try to minimize your test case, please.
Something like: touch Makefile; ls (if that's it).

> My C drive is an internal SSD (NTFS), my H drive is an external flash
> drive (FAT32).  I installed cygwin with the commands:
> ```
> powershell -Command "(New-Object
> Net.WebClient).DownloadFile('http://www.cygwin.com/setup-x86_64.exe',
> 'setup-x86_64.exe')"
> SET CYGMIRROR=http://mirror.easyname.at/cygwin
> SET CYGROOT=H:\cygwin64
> SET CYGCACHE=%CYGROOT%\var\cache\setup
> setup-x86_64.exe -qnNdO -R %CYGROOT% -l %CYGCACHE% -s %CYGMIRROR% -P
> rsync -P patch -P diffutils -P make -P unzip -P m4 -P findutils -P
> time -P wget -P curl -P git -P
> mingw64-x86_64-binutils,mingw64-x86_64-gcc-core,mingw64-x86_64-gcc-g++,mingw64-x86_64-pkg-config,mingw64-x86_64-windows_default_manifest
> -P mingw64-x86_64-headers,mingw64-x86_64-runtime,mingw64-x86_64-pthreads,mingw64-x86_64-zlib
> -P python3
> ```
>
> Running `patch -v` says `GNU patch 2.7.4`.  Note that this happens
> regardless of whether I install cygwin itself on my external flash
> drive or on my internal HD.
>
> This came up when trying to run `opam install findlib` (which fails
> when the home directory is on an external USB drive).
>
> -Jason
>

Re: patch command incorrectly capitalizes filenames that live on external USB flash drives

[Marco Atzeri]

Am 28.04.2020 um 21:27 schrieb Jason Gross via Cygwin:
> Consider the following script in foo.sh:
> ```
> #!/usr/bin/env bash
> 
> set -ex
> 
> cd "$1"
> rm -rf foo
> mkdir foo
> cd foo
> cat > Makefile <<EOF
> a
> b
> c
> d
> e
> EOF
> cat > diff <<EOF
> diff --git a/Makefile b/Makefile
> index 9405325..86d2f8c 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -1,5 +1,5 @@
>   a
>   b
> -c
> +ccc
>   d
>   e
> EOF
> patch -p1 -i ./diff
> ls
> ```
> 
> If I run `./foo.sh /cygdrive/c/`, I get, as expected,
> ```
> + cd /cygdrive/c/
> + rm -rf foo
> + mkdir foo
> + cd foo
> + cat
> + cat
> + patch -p1 -i ./diff
> patching file Makefile
> + ls
> diff  Makefile
> ```
> 
> If I instead run `./foo.sh /cygdrive/h/`, I get
> ```
> + cd /cygdrive/h/
> + rm -rf foo
> + mkdir foo
> + cd foo
> + cat
> + cat
> + patch -p1 -i ./diff
> patching file Makefile
> + ls
> diff  MAKEFILE
> ```
> 
> My C drive is an internal SSD (NTFS), my H drive is an external flash
> drive (FAT32).  I installed cygwin with the commands:


use a flash driver with NTFS and check the difference

I doubt it is a patch issue

Re: patch command incorrectly capitalizes filenames that live on external USB flash drives

[Brian Inglis]

On 2020-04-28 22:52, Marco Atzeri via Cygwin wrote:
> Am 28.04.2020 um 21:27 schrieb Jason Gross via Cygwin:
>> Consider the following script in foo.sh:
>> ```
>> #!/usr/bin/env bash
>>
>> set -ex
>>
>> cd "$1"
>> rm -rf foo
>> mkdir foo
>> cd foo
>> cat > Makefile <<EOF
>> a
>> b
>> c
>> d
>> e
>> EOF
>> cat > diff <<EOF
>> diff --git a/Makefile b/Makefile
>> index 9405325..86d2f8c 100644
>> --- a/Makefile
>> +++ b/Makefile
>> @@ -1,5 +1,5 @@
>>   a
>>   b
>> -c
>> +ccc
>>   d
>>   e
>> EOF
>> patch -p1 -i ./diff
>> ls
>> ```
>>
>> If I run `./foo.sh /cygdrive/c/`, I get, as expected,
>> ```
>> + cd /cygdrive/c/
>> + rm -rf foo
>> + mkdir foo
>> + cd foo
>> + cat
>> + cat
>> + patch -p1 -i ./diff
>> patching file Makefile
>> + ls
>> diff  Makefile
>> ```
>>
>> If I instead run `./foo.sh /cygdrive/h/`, I get
>> ```
>> + cd /cygdrive/h/
>> + rm -rf foo
>> + mkdir foo
>> + cd foo
>> + cat
>> + cat
>> + patch -p1 -i ./diff
>> patching file Makefile
>> + ls
>> diff  MAKEFILE
>> ```
>>
>> My C drive is an internal SSD (NTFS), my H drive is an external flash
>> drive (FAT32).  I installed cygwin with the commands:
> 
> use a flash driver with NTFS and check the difference
> 
> I doubt it is a patch issue

That might be expected with FAT32, which is normally the default format for
flash drives, for maximum compatibility with microcontrollers, which may not
create VFAT Long File Names when file names are <= 8.3, so they appear as upper
case.

	$ cmd /c help format shows Windows format now supports:

	/FS:filesystem	Specifies the type of the file system (FAT, FAT32,
			exFAT, NTFS, UDF, ReFS).

You might want to try an ExFAT formatted flash drive to see if it works as
expected, and is compatible with your other systems.

Following MS opening up exFAT specs, exFAT is supported on most major OSes but
may require packages normally called exfat-utils and exfat-fuse or fuse-exfat to
be installed: exFAT was designed for flash drives.

[P.S. UDF is the new ISO DVD standard and Re(silient)FS was intended to replace
NTFS for Windows Server, but is deprecated, and creation is being dropped from
Windows 10 Home, so that option value may not work.]

-- 
Take care. Thanks, Brian Inglis, Calgary, Alberta, Canada

This email may be disturbing to some readers as it contains
too much technical detail. Reader discretion is advised.

Re: patch command incorrectly capitalizes filenames that live on external USB flash drives

[Jason Gross]

Sorry for the late reply; I can see replies to my messages at
https://cygwin.com/pipermail/cygwin/2020-April/244660.html, but
somehow I'm not receiving them in Gmail.  I've tried (re?)subscribing
to the cygwin mailing list, hopefully this fixes the problem.

Thomas Wolff wrote:
> You are throwing a puzzle into the mailing list and if you are lucky,
> someone may like to solve it.
> But perhaps: can you try to minimize your test case, please.
> Something like: touch Makefile; ls (if that's it).

I think there's some sort of misconception here.  touch and cat create
correctly capitalized files, and sed -i doesn't change capitalization,
even on my FAT32 drive.  patch is the only command I've found so far
which capitalizes filenames when modifying files.  I can try to dig
into the source code of patch and figure out a minimal C program that
breaks casing on files, but, come on, the fact that patch seems to
capitalize the file name of every file it modifies, and no other
utility does this, that seems like a pretty minimal test-case to me.
And anyway, the cygwin patch sources (version 2.7.4) are impossible to
compile, because safe.c can't find sys/resource.h and passing
-I/usr/include via CFLAGS hits an internal bug in patch's configure
script (search.h: present but cannot be compiled; sys/timeb.h: present
but cannot be compiled; fcntl.h: present but cannot be compiled).  (I've emailed
bug-patch@gnu.org as requested by the configure script, but so far
https://lists.gnu.org/archive/html/bug-patch/ isn't showing anything
newer than January.)

Brian Inglis wrote:
> That might be expected with FAT32, which is normally the default format for
> flash drives, for maximum compatibility with microcontrollers, which may not
> create VFAT Long File Names when file names are <= 8.3, so they appear as upper
> case.

This does not explain why `ls` displays "Makefile" as "Makefile"
before I run `patch`, but displays the filename as "MAKEFILE" after I
run `patch`.  Nor does it explain why this happens to patch-modified
files, but not to files modified via sed -i.

Marco Atzeri wrote:
> use a flash driver with NTFS and check the difference

Indeed, I can confirm that this issue occurs when it's FAT or FAT32,
and does not occur under NTFS nor exFAT.

> I doubt it is a patch issue

Do you have another utility that you suggest I try that you think will
display the same problem as patch?  So far, `| tee -a`, `sed -i`,
`touch`, `>`, and `>>` all do not display this issue, while `patch`
does.


-Jason




On Tue, Apr 28, 2020 at 3:27 PM Jason Gross <jasongross9@gmail.com> wrote:
>
> Consider the following script in foo.sh:
> ```
> #!/usr/bin/env bash
>
> set -ex
>
> cd "$1"
> rm -rf foo
> mkdir foo
> cd foo
> cat > Makefile <<EOF
> a
> b
> c
> d
> e
> EOF
> cat > diff <<EOF
> diff --git a/Makefile b/Makefile
> index 9405325..86d2f8c 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -1,5 +1,5 @@
>  a
>  b
> -c
> +ccc
>  d
>  e
> EOF
> patch -p1 -i ./diff
> ls
> ```
>
> If I run `./foo.sh /cygdrive/c/`, I get, as expected,
> ```
> + cd /cygdrive/c/
> + rm -rf foo
> + mkdir foo
> + cd foo
> + cat
> + cat
> + patch -p1 -i ./diff
> patching file Makefile
> + ls
> diff  Makefile
> ```
>
> If I instead run `./foo.sh /cygdrive/h/`, I get
> ```
> + cd /cygdrive/h/
> + rm -rf foo
> + mkdir foo
> + cd foo
> + cat
> + cat
> + patch -p1 -i ./diff
> patching file Makefile
> + ls
> diff  MAKEFILE
> ```
>
> My C drive is an internal SSD (NTFS), my H drive is an external flash
> drive (FAT32).  I installed cygwin with the commands:
> ```
> powershell -Command "(New-Object
> Net.WebClient).DownloadFile('http://www.cygwin.com/setup-x86_64.exe',
> 'setup-x86_64.exe')"
> SET CYGMIRROR=http://mirror.easyname.at/cygwin
> SET CYGROOT=H:\cygwin64
> SET CYGCACHE=%CYGROOT%\var\cache\setup
> setup-x86_64.exe -qnNdO -R %CYGROOT% -l %CYGCACHE% -s %CYGMIRROR% -P
> rsync -P patch -P diffutils -P make -P unzip -P m4 -P findutils -P
> time -P wget -P curl -P git -P
> mingw64-x86_64-binutils,mingw64-x86_64-gcc-core,mingw64-x86_64-gcc-g++,mingw64-x86_64-pkg-config,mingw64-x86_64-windows_default_manifest
> -P mingw64-x86_64-headers,mingw64-x86_64-runtime,mingw64-x86_64-pthreads,mingw64-x86_64-zlib
> -P python3
> ```
>
> Running `patch -v` says `GNU patch 2.7.4`.  Note that this happens
> regardless of whether I install cygwin itself on my external flash
> drive or on my internal HD.
>
> This came up when trying to run `opam install findlib` (which fails
> when the home directory is on an external USB drive).
>
> -Jason

Re: patch command incorrectly capitalizes filenames that live on external USB flash drives

[Jason Gross]

By the way, when I run the same script on the same flash drive from WSL, it
works fine, and does not capitalize the filename.  So this does seem to be
a cygwin-patch specific issue...

On Wed, May 13, 2020 at 8:31 PM Jason Gross <jasongross9@gmail.com> wrote:

> Sorry for the late reply; I can see replies to my messages at
> https://cygwin.com/pipermail/cygwin/2020-April/244660.html, but
> somehow I'm not receiving them in Gmail.  I've tried (re?)subscribing
> to the cygwin mailing list, hopefully this fixes the problem.
>
> Thomas Wolff wrote:
> > You are throwing a puzzle into the mailing list and if you are lucky,
> > someone may like to solve it.
> > But perhaps: can you try to minimize your test case, please.
> > Something like: touch Makefile; ls (if that's it).
>
> I think there's some sort of misconception here.  touch and cat create
> correctly capitalized files, and sed -i doesn't change capitalization,
> even on my FAT32 drive.  patch is the only command I've found so far
> which capitalizes filenames when modifying files.  I can try to dig
> into the source code of patch and figure out a minimal C program that
> breaks casing on files, but, come on, the fact that patch seems to
> capitalize the file name of every file it modifies, and no other
> utility does this, that seems like a pretty minimal test-case to me.
> And anyway, the cygwin patch sources (version 2.7.4) are impossible to
> compile, because safe.c can't find sys/resource.h and passing
> -I/usr/include via CFLAGS hits an internal bug in patch's configure
> script (search.h: present but cannot be compiled; sys/timeb.h: present
> but cannot be compiled; fcntl.h: present but cannot be compiled).  (I've
> emailed
> bug-patch@gnu.org as requested by the configure script, but so far
> https://lists.gnu.org/archive/html/bug-patch/ isn't showing anything
> newer than January.)
>
> Brian Inglis wrote:
> > That might be expected with FAT32, which is normally the default format
> for
> > flash drives, for maximum compatibility with microcontrollers, which may
> not
> > create VFAT Long File Names when file names are <= 8.3, so they appear
> as upper
> > case.
>
> This does not explain why `ls` displays "Makefile" as "Makefile"
> before I run `patch`, but displays the filename as "MAKEFILE" after I
> run `patch`.  Nor does it explain why this happens to patch-modified
> files, but not to files modified via sed -i.
>
> Marco Atzeri wrote:
> > use a flash driver with NTFS and check the difference
>
> Indeed, I can confirm that this issue occurs when it's FAT or FAT32,
> and does not occur under NTFS nor exFAT.
>
> > I doubt it is a patch issue
>
> Do you have another utility that you suggest I try that you think will
> display the same problem as patch?  So far, `| tee -a`, `sed -i`,
> `touch`, `>`, and `>>` all do not display this issue, while `patch`
> does.
>
>
> -Jason
>
>
>
>
> On Tue, Apr 28, 2020 at 3:27 PM Jason Gross <jasongross9@gmail.com> wrote:
> >
> > Consider the following script in foo.sh:
> > ```
> > #!/usr/bin/env bash
> >
> > set -ex
> >
> > cd "$1"
> > rm -rf foo
> > mkdir foo
> > cd foo
> > cat > Makefile <<EOF
> > a
> > b
> > c
> > d
> > e
> > EOF
> > cat > diff <<EOF
> > diff --git a/Makefile b/Makefile
> > index 9405325..86d2f8c 100644
> > --- a/Makefile
> > +++ b/Makefile
> > @@ -1,5 +1,5 @@
> >  a
> >  b
> > -c
> > +ccc
> >  d
> >  e
> > EOF
> > patch -p1 -i ./diff
> > ls
> > ```
> >
> > If I run `./foo.sh /cygdrive/c/`, I get, as expected,
> > ```
> > + cd /cygdrive/c/
> > + rm -rf foo
> > + mkdir foo
> > + cd foo
> > + cat
> > + cat
> > + patch -p1 -i ./diff
> > patching file Makefile
> > + ls
> > diff  Makefile
> > ```
> >
> > If I instead run `./foo.sh /cygdrive/h/`, I get
> > ```
> > + cd /cygdrive/h/
> > + rm -rf foo
> > + mkdir foo
> > + cd foo
> > + cat
> > + cat
> > + patch -p1 -i ./diff
> > patching file Makefile
> > + ls
> > diff  MAKEFILE
> > ```
> >
> > My C drive is an internal SSD (NTFS), my H drive is an external flash
> > drive (FAT32).  I installed cygwin with the commands:
> > ```
> > powershell -Command "(New-Object
> > Net.WebClient).DownloadFile('http://www.cygwin.com/setup-x86_64.exe',
> > 'setup-x86_64.exe')"
> > SET CYGMIRROR=http://mirror.easyname.at/cygwin
> > SET CYGROOT=H:\cygwin64
> > SET CYGCACHE=%CYGROOT%\var\cache\setup
> > setup-x86_64.exe -qnNdO -R %CYGROOT% -l %CYGCACHE% -s %CYGMIRROR% -P
> > rsync -P patch -P diffutils -P make -P unzip -P m4 -P findutils -P
> > time -P wget -P curl -P git -P
> >
> mingw64-x86_64-binutils,mingw64-x86_64-gcc-core,mingw64-x86_64-gcc-g++,mingw64-x86_64-pkg-config,mingw64-x86_64-windows_default_manifest
> > -P
> mingw64-x86_64-headers,mingw64-x86_64-runtime,mingw64-x86_64-pthreads,mingw64-x86_64-zlib
> > -P python3
> > ```
> >
> > Running `patch -v` says `GNU patch 2.7.4`.  Note that this happens
> > regardless of whether I install cygwin itself on my external flash
> > drive or on my internal HD.
> >
> > This came up when trying to run `opam install findlib` (which fails
> > when the home directory is on an external USB drive).
> >
> > -Jason
>

Re: patch command incorrectly capitalizes filenames that live on external USB flash drives

[Jason Gross]

Also btw, the bug I reported to patch is at
https://lists.gnu.org/archive/html/bug-patch/2020-05/msg00000.html .
It's not clear to me if this is a cygwin issue or a patch issue.


On Wed, May 13, 2020 at 10:32 PM Jason Gross <jasongross9@gmail.com> wrote:
>
> By the way, when I run the same script on the same flash drive from WSL, it works fine, and does not capitalize the filename.  So this does seem to be a cygwin-patch specific issue...
>
> On Wed, May 13, 2020 at 8:31 PM Jason Gross <jasongross9@gmail.com> wrote:
>>
>> Sorry for the late reply; I can see replies to my messages at
>> https://cygwin.com/pipermail/cygwin/2020-April/244660.html, but
>> somehow I'm not receiving them in Gmail.  I've tried (re?)subscribing
>> to the cygwin mailing list, hopefully this fixes the problem.
>>
>> Thomas Wolff wrote:
>> > You are throwing a puzzle into the mailing list and if you are lucky,
>> > someone may like to solve it.
>> > But perhaps: can you try to minimize your test case, please.
>> > Something like: touch Makefile; ls (if that's it).
>>
>> I think there's some sort of misconception here.  touch and cat create
>> correctly capitalized files, and sed -i doesn't change capitalization,
>> even on my FAT32 drive.  patch is the only command I've found so far
>> which capitalizes filenames when modifying files.  I can try to dig
>> into the source code of patch and figure out a minimal C program that
>> breaks casing on files, but, come on, the fact that patch seems to
>> capitalize the file name of every file it modifies, and no other
>> utility does this, that seems like a pretty minimal test-case to me.
>> And anyway, the cygwin patch sources (version 2.7.4) are impossible to
>> compile, because safe.c can't find sys/resource.h and passing
>> -I/usr/include via CFLAGS hits an internal bug in patch's configure
>> script (search.h: present but cannot be compiled; sys/timeb.h: present
>> but cannot be compiled; fcntl.h: present but cannot be compiled).  (I've emailed
>> bug-patch@gnu.org as requested by the configure script, but so far
>> https://lists.gnu.org/archive/html/bug-patch/ isn't showing anything
>> newer than January.)
>>
>> Brian Inglis wrote:
>> > That might be expected with FAT32, which is normally the default format for
>> > flash drives, for maximum compatibility with microcontrollers, which may not
>> > create VFAT Long File Names when file names are <= 8.3, so they appear as upper
>> > case.
>>
>> This does not explain why `ls` displays "Makefile" as "Makefile"
>> before I run `patch`, but displays the filename as "MAKEFILE" after I
>> run `patch`.  Nor does it explain why this happens to patch-modified
>> files, but not to files modified via sed -i.
>>
>> Marco Atzeri wrote:
>> > use a flash driver with NTFS and check the difference
>>
>> Indeed, I can confirm that this issue occurs when it's FAT or FAT32,
>> and does not occur under NTFS nor exFAT.
>>
>> > I doubt it is a patch issue
>>
>> Do you have another utility that you suggest I try that you think will
>> display the same problem as patch?  So far, `| tee -a`, `sed -i`,
>> `touch`, `>`, and `>>` all do not display this issue, while `patch`
>> does.
>>
>>
>> -Jason
>>
>>
>>
>>
>> On Tue, Apr 28, 2020 at 3:27 PM Jason Gross <jasongross9@gmail.com> wrote:
>> >
>> > Consider the following script in foo.sh:
>> > ```
>> > #!/usr/bin/env bash
>> >
>> > set -ex
>> >
>> > cd "$1"
>> > rm -rf foo
>> > mkdir foo
>> > cd foo
>> > cat > Makefile <<EOF
>> > a
>> > b
>> > c
>> > d
>> > e
>> > EOF
>> > cat > diff <<EOF
>> > diff --git a/Makefile b/Makefile
>> > index 9405325..86d2f8c 100644
>> > --- a/Makefile
>> > +++ b/Makefile
>> > @@ -1,5 +1,5 @@
>> >  a
>> >  b
>> > -c
>> > +ccc
>> >  d
>> >  e
>> > EOF
>> > patch -p1 -i ./diff
>> > ls
>> > ```
>> >
>> > If I run `./foo.sh /cygdrive/c/`, I get, as expected,
>> > ```
>> > + cd /cygdrive/c/
>> > + rm -rf foo
>> > + mkdir foo
>> > + cd foo
>> > + cat
>> > + cat
>> > + patch -p1 -i ./diff
>> > patching file Makefile
>> > + ls
>> > diff  Makefile
>> > ```
>> >
>> > If I instead run `./foo.sh /cygdrive/h/`, I get
>> > ```
>> > + cd /cygdrive/h/
>> > + rm -rf foo
>> > + mkdir foo
>> > + cd foo
>> > + cat
>> > + cat
>> > + patch -p1 -i ./diff
>> > patching file Makefile
>> > + ls
>> > diff  MAKEFILE
>> > ```
>> >
>> > My C drive is an internal SSD (NTFS), my H drive is an external flash
>> > drive (FAT32).  I installed cygwin with the commands:
>> > ```
>> > powershell -Command "(New-Object
>> > Net.WebClient).DownloadFile('http://www.cygwin.com/setup-x86_64.exe',
>> > 'setup-x86_64.exe')"
>> > SET CYGMIRROR=http://mirror.easyname.at/cygwin
>> > SET CYGROOT=H:\cygwin64
>> > SET CYGCACHE=%CYGROOT%\var\cache\setup
>> > setup-x86_64.exe -qnNdO -R %CYGROOT% -l %CYGCACHE% -s %CYGMIRROR% -P
>> > rsync -P patch -P diffutils -P make -P unzip -P m4 -P findutils -P
>> > time -P wget -P curl -P git -P
>> > mingw64-x86_64-binutils,mingw64-x86_64-gcc-core,mingw64-x86_64-gcc-g++,mingw64-x86_64-pkg-config,mingw64-x86_64-windows_default_manifest
>> > -P mingw64-x86_64-headers,mingw64-x86_64-runtime,mingw64-x86_64-pthreads,mingw64-x86_64-zlib
>> > -P python3
>> > ```
>> >
>> > Running `patch -v` says `GNU patch 2.7.4`.  Note that this happens
>> > regardless of whether I install cygwin itself on my external flash
>> > drive or on my internal HD.
>> >
>> > This came up when trying to run `opam install findlib` (which fails
>> > when the home directory is on an external USB drive).
>> >
>> > -Jason

Re: patch command incorrectly capitalizes filenames that live on external USB flash drives

[Brian Inglis]

On 2020-05-13 23:07, Jason Gross wrote:
> On Wed, May 13, 2020 at 10:32 PM Jason Gross wrote:
>> On Wed, May 13, 2020 at 8:31 PM Jason Gross wrote:
>>> Brian Inglis wrote:
>>>> Marco Atzeri wrote:
>>>>> Thomas Wolff wrote:
>>>>>> On Tue, Apr 28, 2020 at 3:27 PM Jason Gross wrote:

[Please insert comments inline or add at the bottom on this mailing list]

>>>>>> Consider the following script in foo.sh:
>>>>>> #!/usr/bin/env bash
>>>>>> set -ex
>>>>>> cd "$1"
>>>>>> rm -rf foo
>>>>>> mkdir foo
>>>>>> cd foo
>>>>>> cat > Makefile <<EOF
>>>>>> a
>>>>>> b
>>>>>> c
>>>>>> d
>>>>>> e
>>>>>> EOF
>>>>>> cat > diff <<EOF
>>>>>> diff --git a/Makefile b/Makefile
>>>>>> index 9405325..86d2f8c 100644
>>>>>> --- a/Makefile
>>>>>> +++ b/Makefile
>>>>>> @@ -1,5 +1,5 @@
>>>>>>  a
>>>>>>  b
>>>>>> -c
>>>>>> +ccc
>>>>>>  d
>>>>>>  e
>>>>>> EOF
>>>>>> patch -p1 -i ./diff
>>>>>> ls
>>>>>> If I run `./foo.sh /cygdrive/c/`, I get, as expected,
>>>>>> + cd /cygdrive/c/
>>>>>> + rm -rf foo
>>>>>> + mkdir foo
>>>>>> + cd foo
>>>>>> + cat
>>>>>> + cat
>>>>>> + patch -p1 -i ./diff
>>>>>> patching file Makefile
>>>>>> + ls
>>>>>> diff  Makefile

>>> Sorry for the late reply; I can see replies to my messages at 
>>> https://cygwin.com/pipermail/cygwin/2020-April/244660.html, but somehow 
>>> I'm not receiving them in Gmail. I've tried (re?)subscribing to the 
>>> cygwin mailing list, hopefully this fixes the problem.
>>>> You are throwing a puzzle into the mailing list and if you are lucky, 
>>>> someone may like to solve it.>>>> But perhaps: can you try to minimize your test case, please.>>>> Something
like: touch Makefile; ls (if that's it).
>>> I think there's some sort of misconception here. touch and cat create 
>>> correctly capitalized files, and sed -i doesn't change capitalization, 
>>> even on my FAT32 drive. patch is the only command I've found so far
>>> which capitalizes filenames when modifying files. I can try to dig into
>>> the source code of patch and figure out a minimal C program that breaks 
>>> casing on files, but, come on, the fact that patch seems to capitalize 
>>> the file name of every file it modifies, and no other utility does this, 
>>> that seems like a pretty minimal test-case to me. And anyway, the cygwin 
>>> patch sources (version 2.7.4) are impossible to compile, because safe.c 
>>> can't find sys/resource.h and passing -I/usr/include via CFLAGS hits an 
>>> internal bug in patch's configure script (search.h: present but cannot
>>> be compiled; sys/timeb.h: present but cannot be compiled; fcntl.h:
>>> present but cannot be compiled). (I've emailed bug-patch@gnu.org as
>>> requested by the configure script, but so far 
>>> https://lists.gnu.org/archive/html/bug-patch/ isn't showing anything 
>>> newer than January.)
>>>>>> If I instead run `./foo.sh /cygdrive/h/`, I get
>>>>>> ```
>>>>>> + cd /cygdrive/h/
>>>>>> + rm -rf foo
>>>>>> + mkdir foo
>>>>>> + cd foo
>>>>>> + cat
>>>>>> + cat
>>>>>> + patch -p1 -i ./diff
>>>>>> patching file Makefile
>>>>>> + ls
>>>>>> diff  MAKEFILE
>>>>>> ```
>>>>>>
>>>>>> My C drive is an internal SSD (NTFS), my H drive is an external flash
>>>>>> drive (FAT32).  I installed cygwin with the commands:
>>>>>> ```
>>>>>> powershell -Command "(New-Object
>>>>>> Net.WebClient).DownloadFile('http://www.cygwin.com/setup-x86_64.exe',
>>>>>> 'setup-x86_64.exe')"
>>>>>> SET CYGMIRROR=http://mirror.easyname.at/cygwin
>>>>>> SET CYGROOT=H:\cygwin64
>>>>>> SET CYGCACHE=%CYGROOT%\var\cache\setup
>>>>>> setup-x86_64.exe -qnNdO -R %CYGROOT% -l %CYGCACHE% -s %CYGMIRROR% -P
>>>>>> rsync -P patch -P diffutils -P make -P unzip -P m4 -P findutils -P
>>>>>> time -P wget -P curl -P git -P
>>>>>> mingw64-x86_64-binutils,mingw64-x86_64-gcc-core,mingw64-x86_64-gcc-g++,mingw64-x86_64-pkg-config,mingw64-x86_64-windows_default_manifest
>>>>>> -P mingw64-x86_64-headers,mingw64-x86_64-runtime,mingw64-x86_64-pthreads,mingw64-x86_64-zlib
>>>>>> -P python3
>>>>>> ```
>>>>>>
>>>>>> Running `patch -v` says `GNU patch 2.7.4`.  Note that this happens
>>>>>> regardless of whether I install cygwin itself on my external flash
>>>>>> drive or on my internal HD.
>>>>>>
>>>>>> This came up when trying to run `opam install findlib` (which fails
>>>>>> when the home directory is on an external USB drive).

>>>> That might be expected with FAT32, which is normally the default format
>>>> for flash drives, for maximum compatibility with microcontrollers,
>>>> which may not create VFAT Long File Names when file names are <= 8.3,
>>>> so they appear as upper case.
>>> This does not explain why `ls` displays "Makefile" as "Makefile" before I
>>> run `patch`, but displays the filename as "MAKEFILE" after I run `patch`.
>>> Nor does it explain why this happens to patch-modified files, but not to
>>> files modified via sed -i.
>>>> use a flash driver with NTFS and check the difference
>>> Indeed, I can confirm that this issue occurs when it's FAT or FAT32, and 
>>> does not occur under NTFS nor exFAT.
>>>> I doubt it is a patch issue
>>> Do you have another utility that you suggest I try that you think will 
>>> display the same problem as patch?  So far, `| tee -a`, `sed -i`, 
>>> `touch`, `>`, and `>>` all do not display this issue, while `patch` 
>>> does.
>> By the way, when I run the same script on the same flash drive from WSL, it
>> works fine, and does not capitalize the filename.  So this does seem to be
>> a cygwin-patch specific issue...
> Also btw, the bug I reported to patch is at 
> https://lists.gnu.org/archive/html/bug-patch/2020-05/msg00000.html . It's not
> clear to me if this is a cygwin issue or a patch issue.
It may be neither - it may be a Mingw/Msys2 issue - that could explain why you
can not reproduce the issue with other utilities.
You appear to have installed and be running x86_64-w64-mingw32-gcc, binutils,
and libraries, and not Cygwin gcc, binutils, and libraries.
That will not build Cygwin sources: examine your bug report carefully, check
your *PATH*, especially for a ".:" entry, and show the output from:

	$ pwd; which -a cat gcc ls patch tee touch sed

To re-/build Cygwin utilities, install cygport, which will install most of the
required packages and run it.

If you are using a FAT32 file system and create or rename a file with a
naturally short name <= 8.3, you will likely end up with an all uppercase name,
unless the program uses a case sensitive long filename API to ensure output case.
If you use Cygwin rather than Mingw/Msys2 utilities, it may work, or you may
have to force use of a long name > 8.3 e.g. Makefile9.temp, then rename to keep
the desired case.
It's been a while since I've done anything on any FAT file system.

You may want to try enabling long paths to see if this solves your problem:

https://docs.microsoft.com/en-us/windows/win32/fileio/naming-a-file#enable-long-paths-in-windows-10-version-1607-and-later

$ regtool get -pv /proc/registry/HKEY_LOCAL_MACHINE/SYSTEM/CurrentControlSet\
/Control/FileSystem/LongPathsEnabled
0

$ regtool set -iv /proc/registry/HKEY_LOCAL_MACHINE/SYSTEM/CurrentControlSet\
/Control/FileSystem/LongPathsEnabled 1

-- 
Take care. Thanks, Brian Inglis, Calgary, Alberta, Canada

This email may be disturbing to some readers as it contains
too much technical detail. Reader discretion is advised.
[Data in IEC units and prefixes, physical quantities in SI.]

Re: patch command incorrectly capitalizes filenames that live on external USB flash drives

[ASSI]

Jason Gross via Cygwin writes:
> Also btw, the bug I reported to patch is at
> https://lists.gnu.org/archive/html/bug-patch/2020-05/msg00000.html .
> It's not clear to me if this is a cygwin issue or a patch issue.

FWIW, I've just dug out a FAT formatted USB stick and I can't reproduce
your issue.  Again, you may not be using Cygwin's patch at all or have
some other things in the environment that need to compound to produce
this result.


Regards,
Achim.
-- 
+<[Q+ Matrix-12 WAVE#46+305 Neuron microQkb Andromeda XTk Blofeld]>+

SD adaptation for Waldorf rackAttack V1.04R1:
http://Synth.Stromeko.net/Downloads.html#WaldorfSDada

Re: patch command incorrectly capitalizes filenames that live on external USB flash drives

[Ken Brown]

On 5/13/2020 8:31 PM, Jason Gross via Cygwin wrote:
> This does not explain why `ls` displays "Makefile" as "Makefile"
> before I run `patch`, but displays the filename as "MAKEFILE" after I
> run `patch`.  Nor does it explain why this happens to patch-modified
> files, but not to files modified via sed -i.

I vaguely recall from several years ago a strange patch issue that I finally 
tracked down to environment variables used by patch to determine its temporary 
directory.  From 'man patch':

ENVIRONMENT
[...]
        TMPDIR, TMP, TEMP
           Directory  to  put temporary files in; patch uses the first environ‐
           ment variable in this list that is set.  If none are  set,  the  de‐
           fault is system-dependent; it is normally /tmp on Unix hosts.

Do you have any of those variables set to a value other than /tmp?

Ken