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sort: add support for "per-keydef" flags

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This commit is contained in:
Jakob Kramer
2014-05-06 16:07:05 +02:00
committed by sin
parent 109e8963f5
commit 6f7e9a5078
2 changed files with 78 additions and 31 deletions
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27
sort.1
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@@ -1,4 +1,4 @@
.TH NL 1 sbase\-VERSION
.TH SORT 1 sbase\-VERSION
.SH NAME
sort \- sort lines
.SH SYNOPSIS
@@ -27,15 +27,26 @@ reverses the sort.
prints equal lines only once.
.TP
.B \-k key
specifies a key definition of the form \fBS\fR[.\fBs\fR][,\fBE\fR[.\fBe\fR]],
specifies a key definition of the form
.BR S [. s ][ f ][, E [. e ][ f ]]
where
.B S,
.B s,
.B E,
.BR S ,
.BR s ,
.BR E ,
and
.B e
are the starting column, starting character in that column, ending column and
the ending character of that column respectively. If they are not specified,
s refers to the first character of the specified starting column, E refers to
the last column of every line, and e refers to the last character of that last
column.
.B s
refers to the first character of the specified starting column,
.B E
refers to the last column of every line, and
.B e
refers to the last character of that last column.
.B f
can be used to specify options
.RB ( n ,
.BR b )
that only apply to this key definition.
.B b
is special in that it only applies to the column that it was specified after.