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Help: Clarify that ARGV# beyond ARGC will have an undefined behavior (#15380)

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Daniele E. Domenichelli
2015-02-06 16:53:44 +01:00
parent e3363bfbec
commit 4efef3f775
2 changed files with 15 additions and 2 deletions
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Help/command/function.rst
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@@ -24,6 +24,10 @@ This facilitates creating functions with optional arguments.
Additionally ``ARGV`` holds the list of all arguments given to the
function and ``ARGN`` holds the list of arguments past the last expected
argument.
Referencing to ``ARGV#`` arguments beyond ``ARGC`` have undefined
behavior. Checking that ``ARGC`` is greater than ``#`` is the only way
to ensure that ``ARGV#`` was passed to the function as an extra
argument.
A function opens a new scope: see :command:`set(var PARENT_SCOPE)` for
details.