1:45 p.m.
Thanks for diagnosing and testing!
Steve Higham writes:
/* All files are eXecutable under WIN32. Therefore we simply test for
the
existence of the file. I'm not sure what should happen under Cygwin */
Cygwin will need its own workarounds for this; I don't think it's
worth worrying about it now, as we may need to require a recent
version of Cygwin for Vista in any case.
#ifndef X_OK
# ifdef WIN32_NATIVE
# define X_OK 0
# else
# define X_OK 1
# endif
#endif
I don't think this is appropriate. There are only a small number of
uses of X_OK, including at least one platform-independent function
that returns it. You'd need to trace such returned values to be sure
they weren't used outside of Windows-specific calls, and of course you
couldn't be sure they wouldn't be in the future.
What 21.5 does in mswindows_access() in nt.c is to check if (mode &
X_OK) is nonzero, and if so calls a function
mswindows_is_executable(). I think this is the preferred idiom.
BTW, mswindows_is_executable() itself looks kinda problematic: it
checks for the extension .bat, .cmd, .com, or .exe, and decides the
file is executable iff it's one of them. (Not a problem in 21.4,
since that function doesn't exist in 21.4.)
If you're comfortable with this change, could you check it into
the
codebase. I haven't updated the xemacs source code before and would
rather not start now.
Note that all commits to 21.4 must be approved by Vin Shelton. Please
don't commit to the stable branch without his explicit approval.
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10:52 p.m.
New subject: [Bug: 21.4.20] Network Drives
Stephen,
My machine contains several perl scripts (*.pl) which are certainly
executable. Can the "executable extension list" be modified as a standard
lisp variable?
-----Original Message-----
From: Stephen J. Turnbull [mailto:stephenï¼ xemacs.org]
Sent: 28 April 2007 13:46
To: Steve Higham
Cc: 'Benson Margulies'; xemacs-beta(a)xemacs.org
Subject: RE: [Bug: 21.4.20] Network Drives
Thanks for diagnosing and testing!
Steve Higham writes:
/* All files are eXecutable under WIN32. Therefore we simply test for
the
existence of the file. I'm not sure what should happen under Cygwin */
Cygwin will need its own workarounds for this; I don't think it's
worth worrying about it now, as we may need to require a recent
version of Cygwin for Vista in any case.
#ifndef X_OK
# ifdef WIN32_NATIVE
# define X_OK 0
# else
# define X_OK 1
# endif
#endif
I don't think this is appropriate. There are only a small number of
uses of X_OK, including at least one platform-independent function
that returns it. You'd need to trace such returned values to be sure
they weren't used outside of Windows-specific calls, and of course you
couldn't be sure they wouldn't be in the future.
What 21.5 does in mswindows_access() in nt.c is to check if (mode &
X_OK) is nonzero, and if so calls a function
mswindows_is_executable(). I think this is the preferred idiom.
BTW, mswindows_is_executable() itself looks kinda problematic: it
checks for the extension .bat, .cmd, .com, or .exe, and decides the
file is executable iff it's one of them. (Not a problem in 21.4,
since that function doesn't exist in 21.4.)
If you're comfortable with this change, could you check it into
the
codebase. I haven't updated the xemacs source code before and would
rather not start now.
Note that all commits to 21.4 must be approved by Vin Shelton. Please
don't commit to the stable branch without his explicit approval.
_______________________________________________
XEmacs-Beta mailing list
XEmacs-Beta(a)xemacs.org
http://calypso.tux.org/cgi-bin/mailman/listinfo/xemacs-beta
11:48 a.m.
New subject: [Bug: 21.4.20] Network Drives
Steve Higham writes:
My machine contains several perl scripts (*.pl) which are certainly
executable. Can the "executable extension list" be modified as a standard
lisp variable?
No, that's precisely why I consider it bogus, even though I haven't
used Windows in years. The list is implicit in a series of if ... else
if ... clauses in the function.
On the other hand, since I haven't been using Windows, I'm unsure
whether there's a way to register an extension as executable, and how
XEmacs could determine that at runtime. So I need somebody who knows
about that kind of thing to look at it.
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1:11 p.m.
New subject: [Bug: 21.4.20] Network Drives
On 4/29/07, Stephen J. Turnbull <stephen(a)xemacs.org> wrote:
Steve Higham writes:
> My machine contains several perl scripts (*.pl) which are certainly
> executable. Can the "executable extension list" be modified as a
standard
> lisp variable?
No, that's precisely why I consider it bogus, even though I haven't
used Windows in years. The list is implicit in a series of if ... else
if ... clauses in the function.
On the other hand, since I haven't been using Windows, I'm unsure
whether there's a way to register an extension as executable, and how
XEmacs could determine that at runtime. So I need somebody who knows
about that kind of thing to look at it.
I looked at the function; you're right - it's totally bogus. There is
a registry key which defines file associations and we could
potentially use that. I'll investigate a bit further.
- Vin
--
The Journey by Mary Oliver
http://www.poemhunter.com/p/m/poem.asp?poet=6771&poem=30506
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3 comments
3 participants
participants (3)
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Stephen J. Turnbull -
Steve Higham -
Vin Shelton