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Thomas Levine 2016-03-31 18:42:54 +00:00
parent 79ebe8e3f2
commit 1abba45a39
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17
SORTING
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@ -1,17 +1,11 @@
On the criteria for ordering On the criteria for ordering
============================== ==============================
I was confused by the documentation for sort's "-d" flag. I suggest that I was confused by the documentation for sort's "-d" flag. This confusion
we do one of the following. relates to GNU coreutil's locale-specific sort. [^]
* Specify that dictionary order is the default ordering and
that "-d" thus usually has no effect
* Change the default ordering to be a be ASCIIbetical, a lexicographic
sort that considers all characters rather than just blanks and
alphanumeric characters.
Below I discuss sort order differences between different implementations Below I discuss sort order differences between different implementations
of sort and of sh "*". of sort and of sh "*" for my particular environments.
Sorting with sort Sorting with sort
------------ ------------
@ -47,7 +41,7 @@ Debian Wheezy.
- d - d
! e ! e
IEEE Std 1003.1, 2013 Edition [^] specifies that the "-d" flag should IEEE Std 1003.1, 2013 Edition [^^] specifies that the "-d" flag should
enable dictionary order. All of these versions of sort have clear enable dictionary order. All of these versions of sort have clear
documentation about the order that should be returned when the "-d" flag documentation about the order that should be returned when the "-d" flag
is set, (See --help, man, or info.) and the implementations match the is set, (See --help, man, or info.) and the implementations match the
@ -100,4 +94,5 @@ sorting on the rest of the line.
that the above results are in dictionary order because of my investigation of that the above results are in dictionary order because of my investigation of
incompatible implementations of sort.) incompatible implementations of sort.)
[^] http://pubs.opengroup.org/onlinepubs/9699919799/ [^] https://www.gnu.org/software/coreutils/faq/coreutils-faq.html#Sort-does-not-sort-in-normal-order_0021
[^^] http://pubs.opengroup.org/onlinepubs/9699919799/