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runtime(doc): update description of :uniq command

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The examples mention the [u] flag, so at least the [u] flag should be
introduced before the examples.

Slightly reword the sentence about trailing/leading white space.

closes: #17604

Co-authored-by: Hirohito Higashi <h.east.727@gmail.com>
Signed-off-by: zeertzjq <zeertzjq@outlook.com>
Signed-off-by: Hirohito Higashi <h.east.727@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
This commit is contained in:
zeertzjq
2025-06-25 21:07:25 +02:00
committed by Christian Brabandt
parent 037c32e428
commit 1c471ac548
1 changed files with 12 additions and 13 deletions
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runtime/doc/change.txt
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@ -1,4 +1,4 @@
*change.txt* For Vim version 9.1. Last change: 2025 Jun 23 *change.txt* For Vim version 9.1. Last change: 2025 Jun 25
VIM REFERENCE MANUAL by Bram Moolenaar VIM REFERENCE MANUAL by Bram Moolenaar
@ -2014,12 +2014,20 @@ Also see |:sort-uniq|.
With [r] comparison is done on the text that matches With [r] comparison is done on the text that matches
/{pattern}/ instead of the full line. /{pattern}/ instead of the full line.
With [u] only keep lines that do not repeat (i.e., are
not immediately followed by the same line).
With [!] only keep lines that are immediately followed
by a duplicate.
If both [!] and [u] are given, [u] is ignored and [!]
takes effect.
When /{pattern}/ is specified and [r] is not used, the When /{pattern}/ is specified and [r] is not used, the
text matched with {pattern} is skipped and comparison text matched with {pattern} is skipped and comparison
is done on what comes after the match. is done on what comes after the match.
'ignorecase' applies to the pattern, but 'smartcase' 'ignorecase' applies to the pattern, but 'smartcase'
is not used. is not used.
Instead of the slash any non-letter can be used. Instead of the slash any non-letter can be used.
For example, to remove adjacent duplicate lines based For example, to remove adjacent duplicate lines based
@ -2031,17 +2039,8 @@ Also see |:sort-uniq|.
< If {pattern} is empty (e.g. // is used), the last < If {pattern} is empty (e.g. // is used), the last
search pattern is used. search pattern is used.
With [u] only keep lines that do not repeat (i.e., are Note that leading and trailing white space may cause
not immediately followed by the same line). lines to be considered different.
With [!] only keep lines that are immediately followed
by a duplicate.
If both [!] and [u] are given, [u] is ignored and [!]
takes effect.
Note that leading and trailing white space, and lines
that are not adjacent, are not considered duplicates.
To remove all duplicates regardless of position, use To remove all duplicates regardless of position, use
|:sort-u| or external tools. |:sort-u| or external tools.