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(join): Describe new --ignore-case (-i) option.

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Jim Meyering 1996-02-18 17:58:01 +00:00
parent 9e7cf8346d
commit 777d5f0ba8
1 changed files with 11 additions and 1 deletions
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12
doc/textutils.texi
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@ -2204,7 +2204,9 @@ Either @var{file1} or @var{file2} (but not both) can be @samp{-},
meaning standard input. @var{file1} and @var{file2} should be already
sorted in increasing order (not numerically) on the join fields; unless
the @samp{-t} option is given, they should be sorted ignoring blanks at
the start of the line, as in @code{sort -b}.
the start of the join field, as in @code{sort -b}. If the
@samp{--ignore-case} option is given, lines should be sorted without
regard to the case of characters in the join field, as in @code{sort -f}.
The defaults are: the join field is the first field in each line;
fields in the input are separated by one or more blanks, with leading
@ -2226,6 +2228,14 @@ Print a line for each unpairable line in file @var{file-number} (either
Replace those output fields that are missing in the input with
@var{string}.
@item -i
@itemx --ignore-case
@opindex -i
@opindex --ignore-case
Ignore differences in case when comparing keys.
With this option, the lines of the input files must be ordered in the same way.
Use @samp{sort -f} to produce this ordering.
@item -1 @var{field}
@itemx -j1 @var{field}
@opindex -1