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regex: fix a handful of typos in the regex README (#21442)

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Kim Shrier 2024-05-06 01:32:36 -06:00 • committed by GitHub
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16
vlib/regex/README.md
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@ -94,7 +94,7 @@ For example `\w` is the meta-char `w`.
A meta-char can match different types of characters.
- `\w` matches a word char char `[a-zA-Z0-9_]`
- `\w` matches a word char `[a-zA-Z0-9_]`
- `\W` matches a non word char
- `\d` matches a digit `[0-9]`
- `\D` matches a non digit
@ -180,7 +180,7 @@ nested. Like all other tokens, groups can have a quantifier too.
`(c(pa)+z ?)+` matches `cpaz cpapaz cpapapaz` or `cpapaz`
Lets analyze this last case, first we have the group `#0`, that is the most
outer round brackets `(...)+`. This group has a quantifier `+`, that say to
outer round brackets `(...)+`. This group has a quantifier `+`, that says to
match its content *at least one time*.
Then we have a simple char token `c`, and a second group `#1`: `(pa)+`.
@ -227,10 +227,10 @@ for gi < re.groups.len {
> To show the `group id number` in the result of the `get_query()`
> the flag `debug` of the RE object must be `1` or `2`
In order to simplify the use of the captured groups, it possible to use the
In order to simplify the use of the captured groups, it is possible to use the
utility function: `get_group_list`.
This function return a list of groups using this support struct:
This function returns a list of groups using this support struct:
```v oksyntax
pub struct Re_group {
@ -240,7 +240,7 @@ pub:
}
```
Here an example of use:
Here is an example of use:
```v oksyntax
/*
@ -251,8 +251,8 @@ purpose. Example: #A0B0CC #A9F
fn convert_html_rgb(in_col string) u32 {
mut n_digit := if in_col.len == 4 { 1 } else { 2 }
mut col_mul := if in_col.len == 4 { 4 } else { 0 }
// this is the regex query, it use the V string interpolation to customize the regex query
// Note: If you want use escaped code you must use the r"" (raw) strings,
// this is the regex query, it uses the V string interpolation to customize the regex query
// Note: If you want to use escaped code you must use the r"" (raw) strings,
// *** please remember that the V interpoaltion doesn't work on raw strings. ***
query := '#([a-fA-F0-9]{${n_digit}})([a-fA-F0-9]{${n_digit}})([a-fA-F0-9]{${n_digit}})'
mut re := regex.regex_opt(query) or { panic(err) }
@ -271,7 +271,7 @@ fn convert_html_rgb(in_col string) u32 {
}
```
Others utility functions are `get_group_by_id` and `get_group_bounds_by_id`
Other utility functions are `get_group_by_id` and `get_group_bounds_by_id`
that get directly the string of a group using its `id`:
```v ignore