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<?php $s = "क. ಕ. के. ಕೆ. "; echo preg_replace('~\b(?<!\p{M})\p{L}\p{M}*+\.~u', '<pre>$0</pre>', $s);
Output for git.master, git.master_jit, rfc.property-hooks
<pre>क.</pre> <pre>ಕ.</pre> <pre>के.</pre> <pre>ಕೆ.</pre>

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