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Help: short/long variable reference in if command

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Explain that the short form of variable references
in the if command does not apply to ENV and CACHE vars.
This commit is contained in:
Joachim Wuttke (l)
2018-11-01 11:13:03 +01:00
committed by Joachim Wuttke (h)
parent 85498fccd8
commit 8ba2a8d4a4
2 changed files with 14 additions and 4 deletions
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6
Help/command/if.rst
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@@ -231,7 +231,7 @@ which is true because ``var2`` is defined to "var1" which is not a false
constant.
Automatic evaluation applies in the other cases whenever the
above-documented signature accepts ``<variable|string>``:
above-documented condition syntax accepts ``<variable|string>``:
* The left hand argument to ``MATCHES`` is first checked to see if it is
a defined variable, if so the variable's value is used, otherwise the
@@ -269,3 +269,7 @@ specified in a :ref:`Quoted Argument` or a :ref:`Bracket Argument`.
A quoted or bracketed variable or keyword will be interpreted as a
string and not dereferenced or interpreted.
See policy :policy:`CMP0054`.
There is no short form for environment or cache :ref:`Variable References`.
They can be referenced as ``$ENV{<name>}`` or ``$CACHE{<name>}``
wherever the above-documented condition syntax accepts <variable|string>.