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Groups > linux.debian.bugs.dist > #1011758 > unrolled thread
| Started by | Melvin Vermeeren <vermeeren@vermwa.re> |
|---|---|
| First post | 2020-05-28 17:30 +0200 |
| Last post | 2020-05-29 20:00 +0200 |
| Articles | 2 — 2 participants |
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Bug#961739: printf attempts to parse options and fails to print -h or similar Melvin Vermeeren <vermeeren@vermwa.re> - 2020-05-28 17:30 +0200
Bug#961739: printf attempts to parse options and fails to print -h or similar Jakub Wilk <jwilk@jwilk.net> - 2020-05-29 20:00 +0200
| From | Melvin Vermeeren <vermeeren@vermwa.re> |
|---|---|
| Date | 2020-05-28 17:30 +0200 |
| Subject | Bug#961739: printf attempts to parse options and fails to print -h or similar |
| Message-ID | <AbsDM-5yg-7@gated-at.bofh.it> |
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Package: dash Version: 0.5.10.2-5 Hi, POSIX specifies printf has no options, meaning these should print "-h" and "-- help" respectively. Arguments parsing must simply not be attempted at all in order to be compliant as far as I know. $ printf -h sh: 1: printf: Illegal option -h $ printf --help sh: 2: printf: Illegal option -- From https://pubs.opengroup.org/onlinepubs/9699919799/utilities/printf.html: > SYNOPSIS > > printf format [argument...] > > ... > > OPTIONS > > None. Bash also does not handle this correctly. However bash is not POSIX sh, hence it is not a bug. (It appears bash some some "printf -v var" extension.) I also tested zsh, which appears to be fully compliant. Thanks -- Melvin Vermeeren
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| From | Jakub Wilk <jwilk@jwilk.net> |
|---|---|
| Date | 2020-05-29 20:00 +0200 |
| Message-ID | <AbRsu-3uE-3@gated-at.bofh.it> |
| In reply to | #1011758 |
* Melvin Vermeeren <vermeeren@vermwa.re>, 2020-05-28, 17:17: >POSIX specifies printf has no options, meaning these should print "-h" >and "--help" respectively. Arguments parsing must simply not be >attempted at all in order to be compliant as far as I know. As I wrote in #961740, I think you're misinterpreting the standard. >I also tested zsh, which appears to be fully compliant. Let's see: % printf -v printf: argument expected: -v -- Jakub Wilk
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