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From: "T.V Raman" <raman@google.com>
To: Lars Ingebrigtsen <larsi@gnus.org>
Cc: emacs-devel@gnu.org
Subject: Re: eww-update-header-line: Possible breakage after d39ae6f5860ecf6ebbeedc08bf3aafa5befaf510
Date: Sun, 13 Sep 2020 08:47:12 -0700	[thread overview]
Message-ID: <p91een5smpr.fsf@google.com> (raw)
In-Reply-To: <p91imchu26z.fsf@google.com> (T. V. Raman's message of "Sun, 13 Sep 2020 08:27:32 -0700")

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"T.V Raman" <raman@google.com> writes:
Could be a possible bug in propertize?

With the epub rendered in EWW buffer as current buffer:

In addition to the minibuffer eval results shown earlier,

(propertize (plist-get eww-data :title) 'face 'variable-pitch)
thorws the
Debugger entered--Lisp error: (wrong-type-argument stringp nil)
which is the same error that eww-update-header-line threw,
while
(plist-get eww-data :title)
returns a string,

Both of the above evaluated in the relevant stack frame via "e"

> Lars Ingebrigtsen <larsi@gnus.org> writes:
>
> eww-update-header-line was seeing the title as nil which is what
> surprized me.
>
> So: with the rendered buffer as current buffer, evaluating these in the
> minibuffer:
>
> (plist-get eww-data :title) returned the title I had set, but evaluating
>  (eww-update-header-line) in the minibuffer threw an error, with the
>  debugger showing that propertize had been  called with a null string > "T.V Raman" <raman@google.com> writes:
>>
>>> I'm setting eww-data correctly, and plist-get shows that :title is set
>>> correctly in eww-data when I go to the buffer where the ebook is
>>> rendered. However eww-update-header-line throws an error on this line:
>>>
>>> +	     (let ((title (propertize (plist-get eww-data :title)
>>>
>>>   appears that  plist-get in the above call returns nil within
>>>        eww-update-header-line --not sure why 
>>
>> If that bugs out, then :title in eww-data can't be a string, I think?
>>
>> But I see that the old code supported a nil value for title, so I've now
>> tweaked the code a bit to avoid bugging out in this case.  Pushed to the
>> trunk now.

-- 
7©4 Id: kg:/m/0285kf1  •0Ü8



  reply	other threads:[~2020-09-13 15:47 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-09-13 14:22 eww-update-header-line: Possible breakage after d39ae6f5860ecf6ebbeedc08bf3aafa5befaf510 T.V Raman
2020-09-13 15:08 ` Lars Ingebrigtsen
2020-09-13 15:27   ` T.V Raman
2020-09-13 15:47     ` T.V Raman [this message]
2020-09-13 16:20       ` Lars Ingebrigtsen
2020-09-13 16:43         ` T.V Raman
2020-09-13 16:47           ` Lars Ingebrigtsen
2020-09-13 16:52             ` Lars Ingebrigtsen
2020-09-13 17:48           ` T.V Raman

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