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Help: Explicitly state that if(ENV{some_var}) is always false

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Craig Scott 2021-11-28 20:52:42 +11:00
parent 9f07f1939b
commit 3a9695557d
1 changed files with 3 additions and 1 deletions
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Help/command/if.rst
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@ -61,7 +61,9 @@ Basic Expressions
``if(<variable|string>)``
True if given a variable that is defined to a value that is not a false
constant. False otherwise. (Note macro arguments are not variables.)
constant. False otherwise. Note that macro arguments are not variables.
Environment variables also cannot be tested this way, e.g.
``if(ENV{some_var})`` will always evaluate to false.
Logic Operators
"""""""""""""""