Tcl/tk doesn't seem to append .exe to symlinks in Cygwin

Tcl/tk doesn't seem to append .exe to symlinks in Cygwin

[Thrall, Bryan]

I understand this is the place to report problems with Cygwin's tcltk
package?

It looks like the wish.exe provided by tcltk doesn't properly handle
symbolic links to executables. A simple test case:

>>>>>>>>>>>
$ ls -l foo.exe wishtest
lrwxrwxrwx  1 thrall FSUsers  11 Aug 29 18:31 foo.exe -> /bin/ls.exe
-rwxr-xr-x  1 thrall FSUsers 148 Aug 29 18:33 wishtest

$ cat wishtest        
#!/usr/bin/wish

set B [open "|foo 2>@stdout" r+]
set I [gets $B ]

frame .fr
label .fr.head -text "$I"
grid config .fr.head
pack .fr

close $B
<<<<<<<<<<<<<

When I run wishtest, I expect opening the pipe to find foo in the
current directory, but instead I get an error popup ("couldn't open
"foo": no such file or directory"). If you replace foo with foo.exe,
everything works fine.

From my cygcheck output (let me know if you need the whole thing):
tcltk                   20060202-1
cygwin                  1.5.18-1

Please CC me on replies; I'm not subscribed to the insight list.

Thanks,
--
Bryan Thrall
FlightSafety International
Bryan.Thrall@flightsafety.com 

.

Re: Tcl/tk doesn't seem to append .exe to symlinks in Cygwin

[Keith Seitz]

Thrall, Bryan wrote:
> I understand this is the place to report problems with Cygwin's tcltk
> package?

I guess so. We're the major consumer for it.

> It looks like the wish.exe provided by tcltk doesn't properly handle
> symbolic links to executables. A simple test case:

Tcl/tk in our repository are not cygwin applications. They were simply 
modified (a long, long time ago) to build the windows version on cygwin 
(using gcc). They understand nothing (from an API point of view) about 
anything POSIX that cygwin introduces on top of windows. All the 
filesystem commands still run through (non-POSIX) windows APIs. So 
symbol links will not work (neither will paths that include "/cygdrive").

Out of curiosity, I wonder if this has been properly fixed upstream? 
Have you looked at a recent release from www.tcl.tk? Have they found a 
maintainer yet? If so, we could certainly do with dumping our own 
version of tcl et al in favor of a release by the package's real 
maintainers.

Keith

RE: Tcl/tk doesn't seem to append .exe to symlinks in Cygwin

[Thrall, Bryan]

Thrall, Bryan wrote on Tuesday, August 29, 2006 7:10 PM:
> I understand this is the place to report problems with Cygwin's tcltk
> package? 
> 
> It looks like the wish.exe provided by tcltk doesn't properly handle
> symbolic links to executables. A simple test case: 
> 
>>>>>>>>>>>> 
> $ ls -l foo.exe wishtest
> lrwxrwxrwx  1 thrall FSUsers  11 Aug 29 18:31 foo.exe -> /bin/ls.exe
> -rwxr-xr-x  1 thrall FSUsers 148 Aug 29 18:33 wishtest
> 
> $ cat wishtest
> #!/usr/bin/wish
> 
> set B [open "|foo 2>@stdout" r+]
> set I [gets $B ]
> 
> frame .fr
> label .fr.head -text "$I"
> grid config .fr.head
> pack .fr
> 
> close $B
> <<<<<<<<<<<<<
> 
> When I run wishtest, I expect opening the pipe to find foo in the
> current directory, but instead I get an error popup ("couldn't open
> "foo": no such file or directory"). If you replace foo with foo.exe,
> everything works fine.   
> 
> From my cygcheck output (let me know if you need the whole thing):
> tcltk                   20060202-1
> cygwin                  1.5.18-1
> 
> Please CC me on replies; I'm not subscribed to the insight list.
> 
> Thanks,

(cc'd to cygwin list in case the insight list *isn't* the right place)

Has anyone had a chance to look at this yet?

Unfortunately I don't really have the time to dig my way through the
insight code at the moment looking for a fix, so even some pointers that
would speed up my search would be helpful.

Thanks,
-- 
Bryan Thrall
FlightSafety International
Bryan.Thrall@flightsafety.com

.