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On Tuesday, September 22 at 10:33 PM, quoth Wu, Yue:
>Hi, list,
>
>I have a weird issue, my mailcap has this entry:
>
> text/html; opera '%s'; test=test -n "$DISPLAY"
>
>But I still can't view the html attachment, opera always shows me a blank html
>file. What's wrong?
The way that mutt works is that for mailcap handling, it creates
temporary files containing the portion of the email that needs to be
viewed, and then launches the program specified in your mailcap. When
that program exits, mutt deletes the temporary file (if it didn't,
those temporary files would accumulate and pose not only a problem
filling up your disk but also a privacy problem). This is logical and
makes sense; the usual order of events goes like this:
1. mutt creates temporary file
2. mutt launches specified program
3. program views file contents, per user's request
4. program exits
5. mutt deletes temporary file
HOWEVER, this can cause problems with programs like opera and firefox
that don't stay bound to the original execution. They create a
"master" execution of the program, and simply send the filename to it.
Then, the original invocation exits. If that sounds confusing, try
this description of the order of events:
1. mutt creates temporary file containing html
2. mutt launches opera with the filename as an argument
3. opera launches the opera-master process
4. opera sends a message to the opera-master process to open the
temporary file
5. opera exits
6. mutt deletes temporary file
7. opera-master attempts to open the temporary file
See the problem? How can mutt know when Opera is done using the file?
The usual solution is to create a wrapper script that will copy the
temporary file somewhere safe. This essentially just avoids mutt's
cleanup; so you need to have your own way of managing all the
temporary files that will get created.
~Kyle
- --
In any conversation where only one side may be argued, we
instinctively assume that those who publicly defend the official
position are motivated by ideology and not by an interest in truth.
The outlawed position is then assumed to be true, and wins by default.
-- Fr. Andrew Hamilton SJ
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