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patch 9.1.0537: signed number detection for CTRL-X/A can be improved

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Problem:  signed number detection for CTRL-X/A can be improved
          (Chris Patuzzo)
Solution: Add the new "blank" value for the 'nrformat' setting. This
          will make Vim assume a signed number only if there is a blank
          in front of the sign.
          (distobs)

fixes: #15033
closes: #15110

Signed-off-by: distobs <cuppotatocake@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
This commit is contained in:
distobs
2024-07-06 17:50:09 +02:00
committed by Christian Brabandt
parent f095539b39
commit 25ac6d67d9
6 changed files with 79 additions and 9 deletions
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16
runtime/doc/options.txt
View File

@@ -1,4 +1,4 @@
*options.txt* For Vim version 9.1. Last change: 2024 Jun 19
*options.txt* For Vim version 9.1. Last change: 2024 Jul 06
VIM REFERENCE MANUAL by Bram Moolenaar
@@ -5918,6 +5918,20 @@ A jump table for the options with a short description can be found at |Q_op|.
(without "unsigned" it would become "9-2019").
Using CTRL-X on "0" or CTRL-A on "18446744073709551615"
(2^64 - 1) has no effect, overflow is prevented.
blank If included, treat numbers as signed or unsigned based on
preceding whitespace. If a number with a leading dash has its
dash immediately preceded by a non-whitespace character (i.e.,
not a tab or a " "), the negative sign won't be considered as
part of the number. For example:
Using CTRL-A on "14" in "Carbon-14" results in "Carbon-15"
(without "blank" it would become "Carbon-13").
Using CTRL-X on "8" in "Carbon -8" results in "Carbon -9"
(because -8 is preceded by whitespace. If "unsigned" was
set, it would result in "Carbon -7").
If this format is included, overflow is prevented as if
"unsigned" were set. If both this format and "unsigned" are
included, "unsigned" will take precedence.
Numbers which simply begin with a digit in the range 1-9 are always
considered decimal. This also happens for numbers that are not
recognized as octal or hex.

4
runtime/doc/version9.txt
View File

@@ -1,4 +1,4 @@
*version9.txt* For Vim version 9.1. Last change: 2024 Jun 20
*version9.txt* For Vim version 9.1. Last change: 2024 Jul 06
VIM REFERENCE MANUAL by Bram Moolenaar
@@ -41574,6 +41574,8 @@ Changed~
- the default for 'commentstring' contains whitespace padding to have
automatic comments look nicer |comment-install|
- 'completeopt' is now a |global-local| option.
- 'nrformat' accepts the new "blank" suboption, to determine a signed or
unsigned number based on whitespace in front of a minus sign.
*added-9.2*
Added ~