bug#21028: Performance regression in revision af1a69f4d17a482c359d98c00ef86fac835b5fac (Apr 2014).

[Clément Pit--Claudel]

On 2016-12-19 11:39, Eli Zaretskii wrote:
> In "emacs -Q"?  If so, it didn't happen to me.  I tried both the Segoe
> Symbol font (which nowadays includes all the Emoji, so the Emoji font
> is not needed), and the Segoe Emoji one, and saw no slow-down.

The following command still results in a too-slow-to-be-usable Emacs for me.  I 
have attached the corresponding el files.

    /build/emacs/25/src/emacs -Q -l 21028.el 21028 -f prettify-symbols-mode

This is on the following system:

    In GNU Emacs 25.1.90.2 (x86_64-pc-linux-gnu, GTK+ Version 3.18.9)
     of 2016-12-18 built on clem-w50-mint
    Repository revision: 3d94931cec5850fc4dc5ffc9f1bf88a291aa3a5b
    Windowing system distributor 'The X.Org Foundation', version 11.0.11804000
    System Description: Linux Mint 18 Sarah

Clément.

21028
Description: Text document

21028.fixed.el
Description: Text Data

signature.asc
Description: OpenPGP digital signature