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Diffstat (limited to 'doc/gawk.texi')
| -rw-r--r-- | doc/gawk.texi | 7 |
1 files changed, 7 insertions, 0 deletions
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 |