patch 9.0.1298: inserting register on the cmdline does not trigger incsearch Commit: https://github.com/vim/vim/commit/c4b7dec38292fe1cfad7aa5f244031fc6f7c7a09 Author: K.Takata <kentkt@csc.jp> Date: Fri Feb 10 21:38:44 2023 +0000 patch 9.0.1298: inserting register on the cmdline does not trigger incsearch Problem: Inserting a register on the command line does not trigger incsearch or update hlsearch. Solution: Have cmdline_insert_reg() return CMDLINE_CHANGED when appropriate and handle it correctly. (Ken Takata, closes #11960)

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