patch 9.1.0199: Not enough tests for the slice() function
Problem: Not enough tests for the slice() function.
Solution: Test with multibyte chars, and in both Legacy and Vim9 script.
Update docs to be clearer about how it treats composing chars.
(zeertzjq)
closes: #14275
Signed-off-by: zeertzjq <zeertzjq@outlook.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/runtime/doc/builtin.txt b/runtime/doc/builtin.txt
index c857fbc..ec70220 100644
--- a/runtime/doc/builtin.txt
+++ b/runtime/doc/builtin.txt
@@ -1,4 +1,4 @@
-*builtin.txt* For Vim version 9.1. Last change: 2024 Mar 14
+*builtin.txt* For Vim version 9.1. Last change: 2024 Mar 23
VIM REFERENCE MANUAL by Bram Moolenaar
@@ -9068,7 +9068,8 @@
Similar to using a |slice| "expr[start : end]", but "end" is
used exclusive. And for a string the indexes are used as
character indexes instead of byte indexes, like in
- |vim9script|. Also, composing characters are not counted.
+ |vim9script|. Also, composing characters are treated as a
+ part of the preceding base character.
When {end} is omitted the slice continues to the last item.
When {end} is -1 the last item is omitted.
Returns an empty value if {start} or {end} are invalid.
@@ -9465,8 +9466,8 @@
of byte index and length.
When {skipcc} is omitted or zero, composing characters are
counted separately.
- When {skipcc} set to 1, Composing characters are ignored,
- similar to |slice()|.
+ When {skipcc} set to 1, composing characters are treated as a
+ part of the preceding base character, similar to |slice()|.
When a character index is used where a character does not
exist it is omitted and counted as one character. For
example: >
@@ -9484,7 +9485,7 @@
in String {string}.
When {skipcc} is omitted or zero, composing characters are
counted separately.
- When {skipcc} set to 1, Composing characters are ignored.
+ When {skipcc} set to 1, composing characters are ignored.
|strcharlen()| always does this.
Returns zero on error.