| Conditional |
?1yes:no through ?99yes:no |
Conditional referencing a numbered capturing group. Inserts the “yes” part if the group participated or the “no” part if it didn’t. |
Replacing all matches of (y)?|n in yyn! with ?1yes:no yields yesyesno! |
no |
no |
no |
no |
no |
no |
no |
no |
no |
no |
no |
no |
no |
no |
all |
no |
no |
no |
| Conditional |
(?1yes:no) through (?99yes:no) |
Conditional referencing a numbered capturing group. Inserts the “yes” part if the group participated or the “no” part if it didn’t. |
Replacing all matches of (y)?|n in yyn! with (?1yes:no) yields yesyesno! |
V2 |
no |
no |
no |
no |
no |
no |
no |
no |
no |
no |
no |
no |
no |
all |
no |
no |
no |
| Conditional |
(?10yes:no) through (?99yes:no) |
When there are fewer capturing groups than the 2-digit number, treat this as a single-digit conditional with the “yes” part starting with a literal number instead of as an invalid conditional. |
Replacing all matches of (y)?|n in yyn! with (?19yes:no) yields 9yes9yesno! |
V2 |
n/a |
n/a |
n/a |
n/a |
n/a |
n/a |
n/a |
n/a |
n/a |
n/a |
n/a |
n/a |
n/a |
no |
n/a |
n/a |
n/a |
| Conditional |
?{1}yes:no through ?{99}yes:no |
Conditional referencing a numbered capturing group. Inserts the “yes” part if the group participated or the “no” part if it didn’t. |
Replacing all matches of (y)?|n in yyn! with ?{1}yes:no yields yesyesno! |
no |
no |
no |
no |
no |
no |
no |
no |
no |
no |
no |
no |
no |
no |
all1.42–1.88 |
no |
no |
no |
| Conditional |
(?{1}yes:no) through (?{99}yes:no) |
Conditional referencing a numbered capturing group. Inserts the “yes” part if the group participated or the “no” part if it didn’t. |
Replacing all matches of (y)?|n in yyn! with (?{1}yes:no) yields yesyesno! |
V2 |
no |
no |
no |
no |
no |
no |
no |
no |
no |
no |
no |
no |
no |
all1.42–1.88 |
no |
no |
no |
| Conditional |
1:+yes:nothrough{1:+yes:no} through 1:+yes:nothrough{99:+yes:no} |
Conditional referencing a numbered capturing group. Inserts the “yes” part if the group participated or the “no” part if it didn’t. |
Replacing all matches of (y)?|n in yyn! with ${1:+yes:no} yields yesyesno! |
V2 |
no |
no |
no |
extended |
no |
no |
no |
no |
no |
no |
no |
no |
no |
no |
no |
no |
no |
| Conditional |
1:−nothrough{1:-no} through 1:−nothrough{99:-no} |
Conditional referencing a numbered capturing group. Inserts the text captured by the group if it participated or the contents of the conditional if it didn’t. |
Replacing all matches of (y)?|n in yyn! with ${1:-no} yields yyno! |
V2 |
no |
no |
no |
extended |
no |
no |
no |
no |
no |
no |
no |
no |
no |
no |
no |
no |
no |
| Conditional |
Any numbered conditional |
A conditional that references the number of a capturing group that does not exist acts as a conditional to a group that never participates. |
Replacing all matches of (y)?|n in yyn! with (?9yes:no) yields nonono! |
V2 error |
n/a |
n/a |
n/a |
extended error |
n/a |
n/a |
n/a |
n/a |
n/a |
n/a |
n/a |
n/a |
n/a |
all |
n/a |
n/a |
n/a |
| Conditional |
$?{name}yes:no |
Conditional referencing a named capturing group. Inserts the “yes” part if the group participated or the “no” part if it didn’t. |
Replacing all matches of (?'one'y)?|n in yyn! with ?{one}yes:no yields yesyesno! |
no |
no |
no |
no |
no |
no |
no |
no |
no |
no |
no |
no |
no |
no |
all1.42–1.88 |
no |
no |
no |
| Conditional |
(?{name}yes:no) |
Conditional referencing a named capturing group. Inserts the “yes” part if the group participated or the “no” part if it didn’t. |
Replacing all matches of (?'one'y)?|n in yyn! with (?{one}yes:no) yields yesyesno! |
V2 |
no |
no |
no |
no |
no |
no |
no |
no |
no |
no |
no |
no |
no |
all1.42–1.88 |
no |
no |
no |
| Conditional |
name:+yes:no∣Conditionalreferencinganamedcapturinggroup.Insertsthe“yes”partifthegroupparticipatedorthe“no”partifitdidn’t.∣Replacingallmatchesof(?′one′y)?∥ninyyn!with{name:+yes:no} |
Conditional referencing a named capturing group. Inserts the “yes” part if the group participated or the “no” part if it didn’t. |
Replacing all matches of (?'one'y)?|n in yyn! with name:+yes:no∣Conditionalreferencinganamedcapturinggroup.Insertsthe“yes”partifthegroupparticipatedorthe“no”partifitdidn’t.∣Replacingallmatchesof(?′one′y)?∥ninyyn!with{one:+yes:no} yields yesyesno! |
V2 |
no |
no |
no |
extended |
no |
no |
no |
no |
no |
no |
no |
no |
no |
no |
no |
no |
no |
| Conditional |
name:−no∣Conditionalreferencinganamedcapturinggroup.Insertsthetextcapturedbythegroupifitparticipatedorthecontentsoftheconditionalifitdidn’t.∣Replacingallmatchesof(?′one′y)?∥ninyyn!with{name:-no} |
Conditional referencing a named capturing group. Inserts the text captured by the group if it participated or the contents of the conditional if it didn’t. |
Replacing all matches of (?'one'y)?|n in yyn! with name:−no∣Conditionalreferencinganamedcapturinggroup.Insertsthetextcapturedbythegroupifitparticipatedorthecontentsoftheconditionalifitdidn’t.∣Replacingallmatchesof(?′one′y)?∥ninyyn!with{one:-no} yields yyno! |
V2 |
no |
no |
no |
extended |
no |
no |
no |
no |
no |
no |
no |
no |
no |
no |
no |
no |
no |
| Conditional |
Any named conditional |
A conditional that references the name of a capturing group that does not exist is treated as literal text. |
Replacing all matches of (y)?|n in yn! with (?{name}yes:no) yields ?{name}yes:no?{name}yes:no! |
V2 error |
n/a |
n/a |
n/a |
extended error |
n/a |
n/a |
n/a |
n/a |
n/a |
n/a |
n/a |
n/a |
n/a |
all1.42–1.88 |
n/a |
n/a |
n/a |
| Feature |
Syntax |
Description |
Example |
JGsoft |
.NET |
Java |
Perl |
PCRE2 |
PHP |
Delphi |
R |
JavaScript |
VBScript |
XRegExp |
Python |
Ruby |
std::regex |
Boost |
Tcl ARE |
Oracle |
XPath |
