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Regular Expression
/
(=[^-\r\n]+)-
/
gm
Input 1
1
New
abcd-12=jksjd-jkkj-kjk xyzm-87=hjahf-tyewg-766-gffg zaqw-99=poiuy-12hd-0909-iuy
Substitution
\1_
abcd-12=jksjd-jkkj-kjk xyzm-87=hjahf-tyewg-766-gffg zaqw-99=poiuy-12hd-0909-iuy