Regular Expressions 101

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/
.+{x\=([0-9\.]+)\s*y\=([0-9\.]+).+
/
gm
.
matches any character (except for line terminators)
+ matches the previous token between one and unlimited times, as many times as possible, giving back as needed (greedy)
{x
matches the characters {x literally (case sensitive)
\= matches the character = with index 6110 (3D16 or 758) literally (case sensitive)
1st Capturing Group
([0-9\.]+)
Match a single character present in the list below
[0-9\.]
+ matches the previous token between one and unlimited times, as many times as possible, giving back as needed (greedy)
0-9 matches a single character in the range between 0 (index 48) and 9 (index 57) (case sensitive)
\. matches the character . with index 4610 (2E16 or 568) literally (case sensitive)
\s
matches any whitespace character (equivalent to [\r\n\t\f\v ])
* matches the previous token between zero and unlimited times, as many times as possible, giving back as needed (greedy)
y matches the character y with index 12110 (7916 or 1718) literally (case sensitive)
\= matches the character = with index 6110 (3D16 or 758) literally (case sensitive)
2nd Capturing Group
([0-9\.]+)
Match a single character present in the list below
[0-9\.]
+ matches the previous token between one and unlimited times, as many times as possible, giving back as needed (greedy)
0-9 matches a single character in the range between 0 (index 48) and 9 (index 57) (case sensitive)
\. matches the character . with index 4610 (2E16 or 568) literally (case sensitive)
.
matches any character (except for line terminators)
+ matches the previous token between one and unlimited times, as many times as possible, giving back as needed (greedy)
Global pattern flags
g modifier: global. All matches (don't return after first match)
m modifier: multi line. Causes ^ and $ to match the begin/end of each line (not only begin/end of string)
Your regular expression does not match the subject string.Try launching the debugger to find out why.

Regular Expression
No Match

/
/
gm

Test String

Substitution

Processing...