Regular Expressions 101

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/
(?<_KEY_1>[\w\.]+):(?<_VAL_1>[\w\.]+)
/
gm
Named Capture Group _KEY_1
(?<_KEY_1>[\w\.]+)
Match a single character present in the list below
[\w\.]
+ matches the previous token between one and unlimited times, as many times as possible, giving back as needed (greedy)
\w matches any word character (equivalent to [a-zA-Z0-9_])
\. matches the character . with index 4610 (2E16 or 568) literally (case sensitive)
: matches the character : with index 5810 (3A16 or 728) literally (case sensitive)
Named Capture Group _VAL_1
(?<_VAL_1>[\w\.]+)
Match a single character present in the list below
[\w\.]
+ matches the previous token between one and unlimited times, as many times as possible, giving back as needed (greedy)
\w matches any word character (equivalent to [a-zA-Z0-9_])
\. matches the character . with index 4610 (2E16 or 568) literally (case sensitive)
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