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set(file "${CMAKE_CURRENT_BINARY_DIR}/file-to-touch")
file(REMOVE "${file}")
file(TOUCH_NOCREATE "${file}")
if(EXISTS "${file}")
message(FATAL_ERROR "error: TOUCH_NOCREATE created a file!")
endif()
file(TOUCH "${file}")
if(NOT EXISTS "${file}")
message(FATAL_ERROR "error: TOUCH did not create a file!")
endif()
file(REMOVE "${file}")
# Empty arguments used to be an error, but this is valid since CMake 3.30
file(TOUCH)
file(TOUCH_NOCREATE)
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