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| author | Arnold D. Robbins <arnold@skeeve.com> | 2014-03-27 22:28:23 +0200 |
|---|---|---|
| committer | Arnold D. Robbins <arnold@skeeve.com> | 2014-03-27 22:28:23 +0200 |
| commit | 17cb726be0dea75864a89d31054459c02702786e (patch) | |
| tree | 826988615475735a0e37e5e04cf1c917f7ee2dc1 /doc/gawktexi.in | |
| parent | ef5a25cdb3af19a1f2cc14e25e1a93914aae82c1 (diff) | |
| download | egawk-17cb726be0dea75864a89d31054459c02702786e.tar.gz egawk-17cb726be0dea75864a89d31054459c02702786e.tar.bz2 egawk-17cb726be0dea75864a89d31054459c02702786e.zip | |
Add note that lookup of PROCINFO can fail.
Diffstat (limited to 'doc/gawktexi.in')
| -rw-r--r-- | doc/gawktexi.in | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/doc/gawktexi.in b/doc/gawktexi.in index 7ca73834..db949be2 100644 --- a/doc/gawktexi.in +++ b/doc/gawktexi.in @@ -30064,6 +30064,13 @@ An extension can look up the value of @command{gawk}'s special variables. However, with the exception of the @code{PROCINFO} array, an extension cannot change any of those variables. +@quotation NOTE +It is possible for the lookup of @code{PROCINFO} to fail. This happens if +the @command{awk} program being run does not reference @code{PROCINFO}; +in this case @command{gawk} doesn't bother to create the array and +populate it. +@end quotation + @node Symbol table by cookie @subsubsection Variable Access and Update by Cookie |