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Diffstat (limited to 'doc')
| -rw-r--r-- | doc/ChangeLog | 4 | ||||
| -rw-r--r-- | doc/gawk.texi | 9 | ||||
| -rw-r--r-- | doc/gawktexi.in | 9 |
3 files changed, 22 insertions, 0 deletions
diff --git a/doc/ChangeLog b/doc/ChangeLog index 4bbc906c..287f2cd1 100644 --- a/doc/ChangeLog +++ b/doc/ChangeLog @@ -1,3 +1,7 @@ +2019-01-09 Andrew J. Schorr <aschorr@telemetry-investments.com> + + * gawktexi.in (Undocumented): Discuss typeof's optional 2nd argument. + 2019-01-08 Arnold D. Robbins <arnold@skeeve.com> * gawktexi.in (I18N Example): Add more explanation of how to diff --git a/doc/gawk.texi b/doc/gawk.texi index e661c6fa..44c00d00 100644 --- a/doc/gawk.texi +++ b/doc/gawk.texi @@ -4997,6 +4997,15 @@ NaN and Infinity values, instead of the special values @command{gawk} usually produces, as described in @ref{POSIX Floating Point Problems}. This is mainly useful for the included unit tests. +The @code{typeof()} built-in function +(@pxref{Type Functions}) +takes an optional second array argument that, if present, will be cleared +and populated with some information about the internal implementation of +the variable. This can be useful for debugging. At the moment, this +returns a textual version of the flags for scalar variables, and the +array back-end implementation type for arrays. This interface is subject +to change and may not be stable. + @end ignore @node Invoking Summary diff --git a/doc/gawktexi.in b/doc/gawktexi.in index f8850d9a..ac099ccc 100644 --- a/doc/gawktexi.in +++ b/doc/gawktexi.in @@ -4907,6 +4907,15 @@ NaN and Infinity values, instead of the special values @command{gawk} usually produces, as described in @ref{POSIX Floating Point Problems}. This is mainly useful for the included unit tests. +The @code{typeof()} built-in function +(@pxref{Type Functions}) +takes an optional second array argument that, if present, will be cleared +and populated with some information about the internal implementation of +the variable. This can be useful for debugging. At the moment, this +returns a textual version of the flags for scalar variables, and the +array back-end implementation type for arrays. This interface is subject +to change and may not be stable. + @end ignore @node Invoking Summary |