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Help: Clarify handling of non-integer components in if() version tests

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Craig Scott
2018-09-16 11:15:47 +08:00
parent 18eb4c637a
commit 2a2f0ac231
1 changed files with 15 additions and 5 deletions
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Help/command/if.rst
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@@ -148,23 +148,33 @@ Possible expressions are:
``if(<variable|string> VERSION_LESS <variable|string>)``
Component-wise integer version number comparison (version format is
``major[.minor[.patch[.tweak]]]``).
``major[.minor[.patch[.tweak]]]``, omitted components are treated as zero).
Any non-integer version component or non-integer trailing part of a version
component effectively truncates the string at that point.
``if(<variable|string> VERSION_GREATER <variable|string>)``
Component-wise integer version number comparison (version format is
``major[.minor[.patch[.tweak]]]``).
``major[.minor[.patch[.tweak]]]``, omitted components are treated as zero).
Any non-integer version component or non-integer trailing part of a version
component effectively truncates the string at that point.
``if(<variable|string> VERSION_EQUAL <variable|string>)``
Component-wise integer version number comparison (version format is
``major[.minor[.patch[.tweak]]]``).
``major[.minor[.patch[.tweak]]]``, omitted components are treated as zero).
Any non-integer version component or non-integer trailing part of a version
component effectively truncates the string at that point.
``if(<variable|string> VERSION_LESS_EQUAL <variable|string>)``
Component-wise integer version number comparison (version format is
``major[.minor[.patch[.tweak]]]``).
``major[.minor[.patch[.tweak]]]``, omitted components are treated as zero).
Any non-integer version component or non-integer trailing part of a version
component effectively truncates the string at that point.
``if(<variable|string> VERSION_GREATER_EQUAL <variable|string>)``
Component-wise integer version number comparison (version format is
``major[.minor[.patch[.tweak]]]``).
``major[.minor[.patch[.tweak]]]``, omitted components are treated as zero).
Any non-integer version component or non-integer trailing part of a version
component effectively truncates the string at that point.
``if(<variable|string> IN_LIST <variable>)``
True if the given element is contained in the named list variable.