https://bugs.kde.org/show_bug.cgi?id=423680

            Bug ID: 423680
           Summary: Very high CPU load when entering a number in C++
                    syntax
           Product: kate
           Version: 20.04.2
          Platform: Neon Packages
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: syntax
          Assignee: kwrite-bugs-n...@kde.org
          Reporter: andronon...@gmail.com
  Target Milestone: ---

Created attachment 129778
  --> https://bugs.kde.org/attachment.cgi?id=129778&action=edit
Kwrite: hold '1' key CPU load - Normal vs C++

When I hold a number key to enter some long number in C++, kwrite/kate starts
to lag and one of the CPU cores immediately loads up to 100%.

Problem is specific to C++/ISO C++ syntax. C, Rust, Java, JavaScript, for
example, are not affected.

See attached video for example.

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