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authorArnold D. Robbins <arnold@skeeve.com>2015-04-28 16:46:05 +0300
committerArnold D. Robbins <arnold@skeeve.com>2015-04-28 16:46:05 +0300
commit6853b3e94c03194200c5a7c4450820a8eaa0920f (patch)
tree0e68baf9f5d687a0a3b6543f01522a56bf010279 /doc/gawk.texi
parent020be4cb81b519a597acbf85e683cfb95993c2b9 (diff)
parentb4ef28f58688cf3c3a5878c595b6582144ee2cf1 (diff)
downloadegawk-6853b3e94c03194200c5a7c4450820a8eaa0920f.tar.gz
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Merge branch 'master' into feature/regex-type
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diff --git a/doc/gawk.texi b/doc/gawk.texi
index e86e8bba..501aacde 100644
--- a/doc/gawk.texi
+++ b/doc/gawk.texi
@@ -4900,6 +4900,13 @@ Similarly, you may use @code{print} or @code{printf} statements in the
@var{init} and @var{increment} parts of a @code{for} loop. This is another
long-undocumented ``feature'' of Unix @command{awk}.
+@command{gawk} lets you use the names of built-in functions that are
+@command{gawk} extensions as the names of parameters in user-defined functions.
+This is intended to ``future-proof'' old code that happens to use
+function names added by @command{gawk} after the code was written.
+Standard @command{awk} built-in functions, such as @code{sin()} or
+@code{substr()} are @emph{not} shadowed in this way.
+
@end ignore
@node Invoking Summary