Encoding needed for `browse-url' URLs (IDLWAVE html help)

Encoding needed for `browse-url' URLs (IDLWAVE html help)

[David Reitter]

I got the below bug report and I found that idlwave does not encode  
the URL in `idlwave-help-html-link', i.e. if the path contains a  
space, it is not encoded as "%20".

Are `browse-url'  and the function pointed to in `browse-url-browser- 
function' supposed to handle such URLs or not?
If not, it's a bug in idlwave-mode (but possibly in other places).

(Never mind the reported crash - that was due to an undocumented  
'feature' in OS X with not-encoded URLs and the patch for browsing  
URLs with the standard browser.)

Thanks
D

Begin forwarded message:

> From: David Gell <gellda@umich.edu>
> Date: 6 January 2006 18:57:40 GMT
> To: aquamacs-bugs@aquamacs.org
> Subject: [Aquamacs-bugs] Crash when attempting to get IDLWAVE html  
> help
>
> Symptoms:
>
> I had set the value of the customization variable idlwave-html-help- 
> location
> to a directory path which contained a space:
>
> /Library/Application Support/Emacs/idl_html_help
>
> When I shift right-clicked an IDL procedure name in an IDLWAVE mode  
> buffer,
> Aquamacs emacs crashed. It should have opened the default web browser,
> Safari and displayed the documentation page for the procedure. This  
> process works
> properly when the path supplied by the idlwave-html-help-location  
> does not
> contain a space,  I include the crash dump below:
>
>
> **********
>
> Host Name:      gellda01
> Date/Time:      2006-01-06 09:00:26.700 -0500
> OS Version:     10.4.3 (Build 8F46)
> Report Version: 3
>
> Command: Aquamacs Emacs
> Path:    /Applications/Aquamacs Emacs.app/Contents/MacOS/Aquamacs  
> Emacs
> Parent:  WindowServer [26920]
>
> Version: 22 (1.2a)
>
> PID:    27074
> Thread: 0
>
> Exception:  EXC_BAD_ACCESS (0x0001)
> Codes:      KERN_PROTECTION_FAILURE (0x0002) at 0x00000006
>
> Thread 0 Crashed:
> 0   com.apple.CoreFoundation 	0x9073fba4 CFRetain + 60
> 1   com.apple.CoreFoundation 	0x907409ec CFArrayCreate + 456
> 2   org.gnu.AquamacsEmacs    	0x00139074  
> Fmac_launch_url_with_default_browser + 280 (mac.c:4583)
> 3   org.gnu.AquamacsEmacs    	0x000ea034 Feval + 1044 (eval.c:2220)
> 4   org.gnu.AquamacsEmacs    	0x000e897c  
> internal_lisp_condition_case + 528 (eval.c:1413)
> 5   org.gnu.AquamacsEmacs    	0x001198ac Fbyte_code + 4960  
> (bytecode.c:885)
> 6   org.gnu.AquamacsEmacs    	0x000eb468 funcall_lambda + 784  
> (eval.c:3071)
> 7   org.gnu.AquamacsEmacs    	0x000eaf3c Ffuncall + 1196 (eval.c:2934)
> 8   org.gnu.AquamacsEmacs    	0x000ea498 Fapply + 540 (eval.c:2372)
> 9   org.gnu.AquamacsEmacs    	0x000eadec Ffuncall + 860 (eval.c:2883)
> 10  org.gnu.AquamacsEmacs    	0x00118edc Fbyte_code + 2448  
> (bytecode.c:695)
> 11  org.gnu.AquamacsEmacs    	0x000eb468 funcall_lambda + 784  
> (eval.c:3071)
> 12  org.gnu.AquamacsEmacs    	0x000eaf3c Ffuncall + 1196 (eval.c:2934)
> 13  org.gnu.AquamacsEmacs    	0x00118edc Fbyte_code + 2448  
> (bytecode.c:695)
> 14  org.gnu.AquamacsEmacs    	0x000eb468 funcall_lambda + 784  
> (eval.c:3071)
> 15  org.gnu.AquamacsEmacs    	0x000eaf3c Ffuncall + 1196 (eval.c:2934)
> 16  org.gnu.AquamacsEmacs    	0x00118edc Fbyte_code + 2448  
> (bytecode.c:695)
> 17  org.gnu.AquamacsEmacs    	0x000eb468 funcall_lambda + 784  
> (eval.c:3071)
> 18  org.gnu.AquamacsEmacs    	0x000eaf3c Ffuncall + 1196 (eval.c:2934)
> 19  org.gnu.AquamacsEmacs    	0x000ea498 Fapply + 540 (eval.c:2372)
> 20  org.gnu.AquamacsEmacs    	0x000eadec Ffuncall + 860 (eval.c:2883)
> 21  org.gnu.AquamacsEmacs    	0x00118edc Fbyte_code + 2448  
> (bytecode.c:695)
> 22  org.gnu.AquamacsEmacs    	0x000eb468 funcall_lambda + 784  
> (eval.c:3071)
> 23  org.gnu.AquamacsEmacs    	0x000eaf3c Ffuncall + 1196 (eval.c:2934)
> 24  org.gnu.AquamacsEmacs    	0x00118edc Fbyte_code + 2448  
> (bytecode.c:695)
> 25  org.gnu.AquamacsEmacs    	0x000eb468 funcall_lambda + 784  
> (eval.c:3071)
> 26  org.gnu.AquamacsEmacs    	0x000eaf3c Ffuncall + 1196 (eval.c:2934)
> 27  org.gnu.AquamacsEmacs    	0x00118edc Fbyte_code + 2448  
> (bytecode.c:695)
> 28  org.gnu.AquamacsEmacs    	0x000eb468 funcall_lambda + 784  
> (eval.c:3071)
> 29  org.gnu.AquamacsEmacs    	0x000eaf3c Ffuncall + 1196 (eval.c:2934)
> 30  org.gnu.AquamacsEmacs    	0x00118edc Fbyte_code + 2448  
> (bytecode.c:695)
> 31  org.gnu.AquamacsEmacs    	0x000eb468 funcall_lambda + 784  
> (eval.c:3071)
> 32  org.gnu.AquamacsEmacs    	0x000eaf3c Ffuncall + 1196 (eval.c:2934)
> 33  org.gnu.AquamacsEmacs    	0x000e64e0 Fcall_interactively + 5232  
> (callint.c:884)
> 34  org.gnu.AquamacsEmacs    	0x0008abe8 Fcommand_execute + 632  
> (keyboard.c:9759)
> 35  org.gnu.AquamacsEmacs    	0x0007f030 command_loop_1 + 4396  
> (keyboard.c:1801)
> 36  org.gnu.AquamacsEmacs    	0x000e8af0 internal_condition_case +  
> 336 (eval.c:1466)
> 37  org.gnu.AquamacsEmacs    	0x0007dca0 command_loop_2 + 64  
> (keyboard.c:1321)
> 38  org.gnu.AquamacsEmacs    	0x000e8494 internal_catch + 264  
> (eval.c:1211)
> 39  org.gnu.AquamacsEmacs    	0x0007dbf8 command_loop + 148  
> (keyboard.c:1304)
> 40  org.gnu.AquamacsEmacs    	0x0007d5cc recursive_edit_1 + 172  
> (keyboard.c:994)
> 41  org.gnu.AquamacsEmacs    	0x0007d774 Frecursive_edit + 224  
> (keyboard.c:1055)
> 42  org.gnu.AquamacsEmacs    	0x0007c234 main + 3232 (emacs.c:1789)
> 43  org.gnu.AquamacsEmacs    	0x0000a060 _start + 392 (crt.c:267)
> 44  dyld                     	0x8fe01048 _dyld_start + 60
>
> Thread 0 crashed with PPC Thread State 64:
>   srr0: 0x000000009073fba4 srr1:  
> 0x000000000200f930                        vrsave: 0x0000000000000000
>     cr: 0x24002442          xer: 0x0000000000000007   lr:  
> 0x000000009073fb70  ctr: 0x000000009073fb60
>     r0: 0x00000000907409ec   r1: 0x00000000bfffcf00   r2:  
> 0x00000000a073fb70   r3: 0x0000000000000000
>     r4: 0x0000000000000000   r5: 0x0000000004800000   r6:  
> 0x0000000000000010   r7: 0x0000000000000006
>     r8: 0x0000000000000006   r9: 0x0000000000000000  r10:  
> 0x0000000000b00285  r11: 0x0000000000000000
>    r12: 0x0000000000000000  r13: 0x00000000004c18bc  r14:  
> 0x0000000000000000  r15: 0x0000000000488554
>    r16: 0x0000000000000028  r17: 0x0000000000488554  r18:  
> 0x0000000000488554  r19: 0x00000000bfffd130
>    r20: 0x0000000000489c28  r21: 0x0000000000489c28  r22:  
> 0x0000000000000001  r23: 0x0000000000000000
>    r24: 0x00000000bfffd070  r25: 0x00000000a073c180  r26:  
> 0x0000000000000000  r27: 0x0000000000a142dc
>    r28: 0x0000000000a142d0  r29: 0x0000000000000000  r30:  
> 0x0000000000000001  r31: 0x000000009073fb70
>
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>
>
> If emacs crashed, and you have the emacs process in the gdb debugger,
> please include the output from the following gdb commands:
>     `bt full' and `xbacktrace'.
> If you would like to further debug the crash, please read the file
> /Applications/Aquamacs Emacs.app/Contents/Resources/etc/DEBUG for  
> instructions.
>
>
> In GNU Emacs 22.0.50.1 (powerpc-apple-darwin7.9.0)
>  of 2005-12-21 on rodrigues.inf.ed.ac.uk - Aquamacs Distribution 0.9.8
> X server distributor `Apple Computers', version 10.4.3
> configured using `configure '--without-x' '--prefix=/usr/local''
>
> Important settings:
>   value of $LC_ALL: nil
>   value of $LC_COLLATE: nil
>   value of $LC_CTYPE: nil
>   value of $LC_MESSAGES: nil
>   value of $LC_MONETARY: nil
>   value of $LC_NUMERIC: nil
>   value of $LC_TIME: nil
>   value of $LANG: nil
>   locale-coding-system: iso-8859-1
>   default-enable-multibyte-characters: t
>
> Major mode: IDL-Shell
>
> Minor modes in effect:
>   one-buffer-one-frame-mode: t
>   smart-frame-positioning-mode: t
>   recentf-mode: t
>   encoded-kbd-mode: t
>   osx-key-mode: t
>   show-paren-mode: t
>   delete-selection-mode: t
>   pc-selection-mode: t
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Re: Encoding needed for `browse-url' URLs (IDLWAVE html help)

[Kevin Rodgers]

David Reitter wrote:
 > I got the below bug report and I found that idlwave does not encode  the
 > URL in `idlwave-help-html-link', i.e. if the path contains a  space, it
 > is not encoded as "%20".
 >
 > Are `browse-url'  and the function pointed to in `browse-url-browser-
 > function' supposed to handle such URLs or not?
 > If not, it's a bug in idlwave-mode (but possibly in other places).

No, browse-url expects a URL that is valid w.r.t. the spec.  That is why
the browse-url-of-file command calls the browse-url-file-url utility to
transform the file name to a valid URL before calling browse-url.
Presumably idlwave should do the same thing.

-- 
Kevin Rodgers

Re: Encoding needed for `browse-url' URLs (IDLWAVE html help)

[JD Smith]

In article <DB56FDAD-F1BA-424A-B4F7-E8C2A3DA2790@gmail.com>, David Reitter
<david.reitter@gmail.com> wrote:

> I got the below bug report and I found that idlwave does not encode  
> the URL in `idlwave-help-html-link', i.e. if the path contains a  
> space, it is not encoded as "%20".
> 
> Are `browse-url'  and the function pointed to in `browse-url-browser- 
> function' supposed to handle such URLs or not?
> If not, it's a bug in idlwave-mode (but possibly in other places).
> 
> (Never mind the reported crash - that was due to an undocumented  
> 'feature' in OS X with not-encoded URLs and the patch for browsing  
> URLs with the standard browser.)

There is apparently a function `browse-url-file-url' which I overlooked,
which does this for you.  Perhaps adding this to the browse-url docstring
would be wise.  Even better would be calling it directly on file-based
urls.  It does all the encoding necessary.  CVS Emacs didn't crash under
OSX when sending file:// urls with unencoded spaces, so that must be an
AquaMacs only thing.  

I'll submit this fix along with others in a version of IDLWAVE I'm
preparing for inclusion in Emacs 22 (which does away with the need for
vendor-supplied documentation and scans, among other things).

JD

Re: Encoding needed for `browse-url' URLs (IDLWAVE html help)

[Richard M. Stallman]

    There is apparently a function `browse-url-file-url' which I overlooked,
    which does this for you.  Perhaps adding this to the browse-url docstring
    would be wise.

That seems like a good idea.  Would you like to write a patch?

		    Even better would be calling it directly on file-based
    urls.

I don't understand what that would mean; could you explain?

Re: Encoding needed for `browse-url' URLs (IDLWAVE html help)

[David Reitter]

On 14 Jan 2006, at 06:50, JD Smith wrote:

>   CVS Emacs didn't crash under
> OSX when sending file:// urls with unencoded spaces, so that must  
> be an
> AquaMacs only thing.

Correct. That's because I've patched it to open URLs with the system- 
wide default browser that the user has set up rather than with the  
application that happens to be bound to .html files. In this code,  
the system refused to convert the URL because of the wrong encoding,  
and we didn't error-check this return value.

> I'll submit this fix along with others in a version of IDLWAVE I'm
> preparing for inclusion in Emacs 22 (which does away with the need for
> vendor-supplied documentation and scans, among other things).

Thanks.
I just found another case of a similar problem, namely in  lisp/ 
filesets.el  (line 625).

Re: encoding needed for `browse-url' URLs (IDLWAVE html help)

[David Reitter]

Begin forwarded message:


Hi,
>
>> I'll submit this fix along with others in a version of IDLWAVE I'm
>> preparing for inclusion in Emacs 22 (which does away with the need  
>> for
>> vendor-supplied documentation and scans, among other things).
>
> Thanks.
> I just found another case of a similar problem, namely in  lisp/ 
> filesets.el  (line 625).
I'm currently away from the emacs camp so to say and until I decide  
to use Emacs again I'm not able to maintain filesets.el. Also I  
didn't follow this discussion which is why I don't know what is the  
problem you're discussing. Sorry.

Apart from that, if filesets-external-viewers is the problem, I think  
this should be replaced with a general cross-platform solution  
anyway. AFAIR there are some elisp libraries that provide a similar  
functionality but they should really use only one service provider/ 
lib for this.

Cheers,
Thomas.

p.s. I didn't cc this mail to emacs-devel as I'm not subscribed.