diff options
Diffstat (limited to 'doc/gawk.texi')
| -rw-r--r-- | doc/gawk.texi | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/doc/gawk.texi b/doc/gawk.texi index 0c21d923..e9d987f0 100644 --- a/doc/gawk.texi +++ b/doc/gawk.texi @@ -8115,9 +8115,11 @@ it encounters the end of the file. If there is some error in getting a record, such as a file that cannot be opened, then @code{getline} returns @minus{}1. In this case, @command{gawk} sets the variable @code{ERRNO} to a string describing the error that occurred. + If @code{ERRNO} indicates that the I/O operation may be -retried, and @code{PROCINFO["input", "RETRY"]} is set, then @minus{}2 -will be returned instead of @minus{}1, and further calls to @code{getline} +retried, and @code{PROCINFO["@var{input}", "RETRY"]} is set, +then @code{getline} returns @minus{}2 +instead of @minus{}1, and further calls to @code{getline} may be attemped. @DBXREF{Retrying Input} for further information about this feature. @@ -8797,7 +8799,7 @@ When @command{gawk} encounters an error while reading input, by default @code{getline} returns @minus{}1, and subsequent attempts to read from that file result in an end-of-file indication. However, you may optionally instruct @command{gawk} to allow I/O to be retried when -certain errors are encountered by setting setting a special element in +certain errors are encountered by setting a special element in the @code{PROCINFO} array (@pxref{Auto-set}): @example @@ -8808,7 +8810,7 @@ When this element exists, @command{gawk} checks the value of the system @code{errno} variable when an I/O error occurs. If @code{errno} indicates a subsequent I/O attempt may succeed, @code{getline} instead returns @minus{}2 and -further calls to @code{getline} may succeed. This applies to @code{errno} +further calls to @code{getline} may succeed. This applies to the @code{errno} values @code{EAGAIN}, @code{EWOULDBLOCK}, @code{EINTR}, or @code{ETIMEDOUT}. This feature is useful in conjunction with |