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bug#28595: In mode-line-format, `:propertize' drops some existing text p


From: Clément Pit--Claudel
Subject: bug#28595: In mode-line-format, `:propertize' drops some existing text properties
Date: Tue, 26 Sep 2017 01:10:40 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.3.0

On 2017-09-25 20:52, Eli Zaretskii wrote:
> On September 24, 2017 2:03:02 PM GMT+01:00, "Clément Pit--Claudel" 
> <address@hidden> wrote:
>> Hi all,
>>
>> Based on the docs, the three following forms should yield the same
>> results:
>>
>> (format-mode-line `(:propertize #("AB" 1 2 (x 0)) y 0))
>> (format-mode-line `(:propertize ("A" #("B" 0 1 (x 0))) y 0))
>> (format-mode-line '(:propertize ("A" (:propertize "B" x 0)) y 0))
>>
>> But they don't:
>>
>> (format-mode-line `(:propertize #("AB" 1 2 (x 0)) y 0))
>> => #("AB" 0 2 (y 0)) ;; x 0 is dropped
>>
>> (format-mode-line '(:propertize ("A" (:propertize "B" x 0)) y 0))
>> ⇒ #("AB" 0 1 (y 0) 1 2 (x 0)) ;; y 0 is dropped on 1..2
>>
>> (format-mode-line `(:propertize ("A" #("B" 0 1 (x 0))) y 0))
>> ⇒ #("AB" 0 1 (y 0) 1 2 (y 0 x 0)) ;; Seems right
>>
>> Am I misreading the docs?
>> Clément.
> 
> You already asked the same in bug#26291.

Ouch. Sorry.

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