[CMake] lack of operator for easy string concatenation

[Piotr Dobrogost]

Hi

Am I missing something or there is no operator for easy string
concatenation in cmake?

Instead of writing

SET(CMAKE_MODULE_PATH
"${CMAKE_CURRENT_SOURCE_DIR}/CMake;${CMAKE_MODULE_PATH}")

it would be nice to be able to write

CMAKE_MODULE_PATH += "${CMAKE_CURRENT_SOURCE_DIR}/CMake;"

or at least

SET(CMAKE_MODULE_PATH += "${CMAKE_CURRENT_SOURCE_DIR}/CMake;")

"+=" would mean to prepend to and "=+" to append to existing string.

-- 
Piotr Dobrogost
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