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patch 8.2.2606: strchars() defaults to counting composing characters

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Problem:    strchars() defaults to counting composing characters.
Solution:   Add strcharlen() which ignores composing characters.
This commit is contained in:
Bram Moolenaar
2021-03-14 19:02:09 +01:00
parent 0289a093a4
commit 70ce8a1561
5 changed files with 59 additions and 15 deletions
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19
runtime/doc/eval.txt
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@@ -2923,10 +2923,11 @@ str2list({expr} [, {utf8}]) List convert each character of {expr} to
ASCII/UTF8 value
str2nr({expr} [, {base} [, {quoted}]])
Number convert String to Number
strcharlen({expr}) Number character length of the String {expr}
strcharpart({str}, {start} [, {len}])
String {len} characters of {str} at
character {start}
strchars({expr} [, {skipcc}]) Number character length of the String {expr}
strchars({expr} [, {skipcc}]) Number character count of the String {expr}
strdisplaywidth({expr} [, {col}]) Number display length of the String {expr}
strftime({format} [, {time}]) String format time with a specified format
strgetchar({str}, {index}) Number get char {index} from {str}
@@ -10276,6 +10277,19 @@ str2nr({expr} [, {base} [, {quoted}]]) *str2nr()*
Can also be used as a |method|: >
GetText()->str2nr()
strcharlen({expr}) *strcharlen()*
The result is a Number, which is the number of characters
in String {expr}. Composing characters are ignored.
|strchars()| can count the number of characters, counting
composing characters separately.
Also see |strlen()|, |strdisplaywidth()| and |strwidth()|.
Can also be used as a |method|: >
GetText()->strcharlen()
strcharpart({src}, {start} [, {len}]) *strcharpart()*
Like |strpart()| but using character index and length instead
of byte index and length. Composing characters are counted
@@ -10288,12 +10302,15 @@ strcharpart({src}, {start} [, {len}]) *strcharpart()*
Can also be used as a |method|: >
GetText()->strcharpart(5)
strchars({expr} [, {skipcc}]) *strchars()*
The result is a Number, which is the number of characters
in String {expr}.
When {skipcc} is omitted or zero, composing characters are
counted separately.
When {skipcc} set to 1, Composing characters are ignored.
|strcharlen()| does the same.
Also see |strlen()|, |strdisplaywidth()| and |strwidth()|.
{skipcc} is only available after 7.4.755. For backward

3
runtime/doc/usr_41.txt
View File

@@ -611,7 +611,8 @@ String manipulation: *string-functions*
stridx() first index of a short string in a long string
strridx() last index of a short string in a long string
strlen() length of a string in bytes
strchars() length of a string in characters
strcharlen() length of a string in characters
strchars() number of characters in a string
strwidth() size of string when displayed
strdisplaywidth() size of string when displayed, deals with tabs
setcellwidths() set character cell width overrides