[isabelle-dev] NEWS: update_cartouches

[Makarius]

*** System ***

* The Isabelle tool "update_cartouches" changes theory files to use 
cartouches instead of old-style {* verbatim *} or `alt_string` tokens.

This refers to Isabelle/fffdbce036db.  In the subsequent changesets, I 
have modernized a few of my own hotspots accordingly, but refrained from 
large-scale updates of theory sources.

The tool emerged from the observation that a few people have already 
started to use cartouches even in main HOL.

It should be noted that Proof General cannot step through such files, so 
it needs to general plan how to proceed.  Is now the time to delete Proof 
General and the TTY loop?


 	Makarius

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