patch 9.1.1476: no easy way to deduplicate text
Problem: no easy way to deduplicate text
Solution: add the :uniq ex command
(Hirohito Higashi)
closes: #17538
Signed-off-by: Hirohito Higashi <h.east.727@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
This commit is contained in:
Hirohito Higashi
committed by
Christian Brabandt
Christian Brabandt
parent
159d392427
commit
74f0a77bb9
@ -1,4 +1,4 @@
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*builtin.txt* For Vim version 9.1. Last change: 2025 Jun 07
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*builtin.txt* For Vim version 9.1. Last change: 2025 Jun 23
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VIM REFERENCE MANUAL by Bram Moolenaar
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@ -12143,6 +12143,7 @@ uniq({list} [, {func} [, {dict}]]) *uniq()* *E882*
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:let newlist = uniq(copy(mylist))
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< The default compare function uses the string representation of
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each item. For the use of {func} and {dict} see |sort()|.
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For deduplicating text in the current buffer see |:uniq|.
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Returns zero if {list} is not a |List|.
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@ -1,4 +1,4 @@
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*change.txt* For Vim version 9.1. Last change: 2025 May 28
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*change.txt* For Vim version 9.1. Last change: 2025 Jun 23
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VIM REFERENCE MANUAL by Bram Moolenaar
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@ -20,6 +20,7 @@ commands with the "." command.
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5. Copying and moving text |copy-move|
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6. Formatting text |formatting|
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7. Sorting text |sorting|
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8. Deduplicating text |deduplicating|
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For inserting text see |insert.txt|.
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@ -1895,6 +1896,7 @@ And a few warnings:
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Vim has a sorting function and a sorting command. The sorting function can be
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found here: |sort()|, |uniq()|.
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Also see |:uniq|.
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*:sor* *:sort*
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:[range]sor[t][!] [b][f][i][l][n][o][r][u][x] [/{pattern}/]
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@ -1904,7 +1906,7 @@ found here: |sort()|, |uniq()|.
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With [!] the order is reversed.
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With [i] case is ignored.
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*:sort-l*
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With [l] sort uses the current collation locale.
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Implementation details: strcoll() is used to compare
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strings. See |:language| to check or set the collation
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@ -1937,13 +1939,14 @@ found here: |sort()|, |uniq()|.
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With [b] sorting is done on the first binary number in
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the line (after or inside a {pattern} match).
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*:sort-u* *:sort-uniq*
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With [u] (u stands for unique) only keep the first of
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a sequence of identical lines (ignoring case when [i]
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is used). Without this flag, a sequence of identical
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lines will be kept in their original order.
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Note that leading and trailing white space may cause
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lines to be different.
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When you just want to make things unique, use |:uniq|.
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When /{pattern}/ is specified and there is no [r] flag
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the text matched with {pattern} is skipped, so that
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@ -1990,4 +1993,56 @@ The sorting can be interrupted, but if you interrupt it too late in the
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process you may end up with duplicated lines. This also depends on the system
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library function used.
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==============================================================================
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8. Deduplicating text *deduplicating* *unique*
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Vim has a deduplicating function and a deduplicating command. The
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deduplicating function can be found here: |uniq()|.
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Also see |:sort-uniq|.
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*:uni* *:uniq*
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:[range]uni[q][!] [i][l][r][u] [/{pattern}/]
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Remove duplicate lines that are adjacent to each other
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in [range]. When no range is given, all lines are
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processed.
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With [i] case is ignored when comparing lines.
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With [l] comparison uses the current collation locale.
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See |:sort-l| for more details.
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With [r] comparison is done on the text that matches
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/{pattern}/ instead of the full line.
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When /{pattern}/ is specified and [r] is not used, the
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text matched with {pattern} is skipped and comparison
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is done on what comes after the match.
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'ignorecase' applies to the pattern, but 'smartcase'
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is not used.
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Instead of the slash any non-letter can be used.
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For example, to remove adjacent duplicate lines based
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on the second comma-separated field: >
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:uniq r /[^,]*,/
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< Or to keep only unique lines ignoring the first 5
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characters: >
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:uniq u /.\{5}/
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< If {pattern} is empty (e.g. // is used), the last
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search pattern is used.
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With [u] only keep lines that do not repeat (i.e., are
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not immediately followed by the same line).
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With [!] only keep lines that are immediately followed
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by a duplicate.
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If both [!] and [u] are given, [u] is ignored and [!]
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takes effect.
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Note that leading and trailing white space, and lines
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that are not adjacent, are not considered duplicates.
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To remove all duplicates regardless of position, use
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|:sort-u| or external tools.
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vim:tw=78:ts=8:noet:ft=help:norl:
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@ -1,4 +1,4 @@
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*index.txt* For Vim version 9.1. Last change: 2025 Jun 02
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*index.txt* For Vim version 9.1. Last change: 2025 Jun 23
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VIM REFERENCE MANUAL by Bram Moolenaar
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@ -1740,6 +1740,7 @@ tag command action ~
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|:unabbreviate| :una[bbreviate] remove abbreviation
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|:unhide| :unh[ide] open a window for each loaded file in the
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buffer list
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|:uniq| :uni[q] uniq lines
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|:unlet| :unl[et] delete variable
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|:unlockvar| :unlo[ckvar] unlock variables
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|:unmap| :unm[ap] remove mapping
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@ -3331,6 +3331,9 @@ $quote eval.txt /*$quote*
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:so repeat.txt /*:so*
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:sor change.txt /*:sor*
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:sort change.txt /*:sort*
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:sort-l change.txt /*:sort-l*
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:sort-u change.txt /*:sort-u*
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:sort-uniq change.txt /*:sort-uniq*
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:source repeat.txt /*:source*
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:source! repeat.txt /*:source!*
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:source-range repeat.txt /*:source-range*
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@ -3565,6 +3568,8 @@ $quote eval.txt /*$quote*
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:undolist undo.txt /*:undolist*
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:unh windows.txt /*:unh*
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:unhide windows.txt /*:unhide*
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:uni change.txt /*:uni*
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:uniq change.txt /*:uniq*
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:unl eval.txt /*:unl*
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:unlet eval.txt /*:unlet*
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:unlet-$ eval.txt /*:unlet-$*
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@ -6864,6 +6869,7 @@ debugger-support debugger.txt /*debugger-support*
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debugger.txt debugger.txt /*debugger.txt*
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dec-mouse options.txt /*dec-mouse*
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decada_members ft_ada.txt /*decada_members*
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deduplicating change.txt /*deduplicating*
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deepcopy() builtin.txt /*deepcopy()*
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default-constructor vim9class.txt /*default-constructor*
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defaults.vim starting.txt /*defaults.vim*
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@ -11015,6 +11021,7 @@ undofile() builtin.txt /*undofile()*
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undotree() builtin.txt /*undotree()*
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unicode mbyte.txt /*unicode*
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uniq() builtin.txt /*uniq()*
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unique change.txt /*unique*
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unix os_unix.txt /*unix*
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unlisted-buffer windows.txt /*unlisted-buffer*
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up-down-motions motion.txt /*up-down-motions*
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@ -1,4 +1,4 @@
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*version9.txt* For Vim version 9.1. Last change: 2025 Jun 16
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*version9.txt* For Vim version 9.1. Last change: 2025 Jun 23
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VIM REFERENCE MANUAL by Bram Moolenaar
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@ -41756,6 +41756,7 @@ Ex-Commands: ~
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|:pbuffer| Edit buffer [N] from the buffer list in the preview
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window
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|:redrawtabpanel| Force updating the 'tabpanel'.
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|:uniq| Deduplicate text in the current buffer.
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Options: ~
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