On Thu, Nov 29, 2007 at 08:32:55AM -0500, Eric Sunshine wrote:
>
> According to the dash manual, within single quotes, all characters are
> treated as literals (except single quote), which appears to agree with
> POSIX, so the above behavior seems incorrect.
We need a patch for the dash manual :)
Unfortunately according to POSIX we must interpret these escape sequences:
12680 NAME
12681 echo - write arguments to standard output
12682 SYNOPSIS
12683 echo [string ...]
12684 DESCRIPTION
12685 The echo utility writes its arguments to standard output,
followed by a <newline>. If there are
12686 no arguments, only the <newline> is written.
12687 OPTIONS
12688 The echo utility shall not recognize the "- -" argument in the
manner specified by Guideline 10
12689 of the Base Definitions volume of IEEE Std 1003.1-200x,
Section 12.2, Utility Syntax Guidelines;
12690 "- -" shall be recognized as a string operand.
12691 Implementations shall not support any options.
12692 OPERANDS
12693 The following operands shall be supported:
12694 string A string to be written to standard output. If any
operand is -n, it shall be treated as
12695 a string, not an option. The following character
sequences shall be recognized
12696 within any of the arguments:
12697 \a Write an <alert>.
12698 \b Write a <backspace>.
12699 \c Suppress the <newline> that otherwise
follows the final argument in the
12700 output. All characters following the
'\c' in the arguments shall be
12701 ignored.
12702 \f Write a <form-feed>.
12703 \n Write a <newline>.
12704 \r Write a <carriage-return>.
12705 \t Write a <tab>.
12706 \v Write a <vertical-tab>.
12707 \\ Write a backslash character.
12708 \0num Write an 8-bit value that is the zero, one,
two, or three-digit octal number
12709 num.
I suggest that you switch over printf for portability. That is, replace
all occurances of
echo "string"
with
printf "%s\n" "string
Cheers,
--
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Email: Herbert Xu ~{PmV>HI~} <[EMAIL PROTECTED]>
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