[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: printf %n is not documented
|
From: |
Chet Ramey |
|
Subject: |
Re: printf %n is not documented |
|
Date: |
Fri, 23 Dec 2022 18:53:08 -0500 |
|
User-agent: |
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:102.0) Gecko/20100101 Thunderbird/102.5.0 |
On 12/23/22 7:24 AM, Emanuele Torre wrote:
About two months ago, I discovered, reading the bash source code for
printf, the %n format specifier.
What it does is assign to the variable specified as its argument, the
number of bytes that have been written so far (similarly to the C
counterpart).
It's a standard part of printf(3), and is standardized by POSIX. Bash
doesn't document the standard conversion specifiers.
--
``The lyf so short, the craft so long to lerne.'' - Chaucer
``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, UTech, CWRU chet@case.edu http://tiswww.cwru.edu/~chet/