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Using both literals and variables in regexp Posted by tclnewbee (tclnewbee), 19 July 2004 Hi, Lets say : set str "sgh 567" I'm able to find patterns using regexp as below: regexp -indices {[[:space:]]} $str res and i'm also able to find like: set ptr 567 regexp -indices "$ptr" $str res But I want a mixture of both, something like: regexp -indices {[[:space:]]*("$ptr")} how do I combine the two. Thanks. I really need it urgently. Posted by admin (Graham Ellis), 19 July 2004 You need to double quote the regular expression and not enclose it in { and } - since variables starting with $ are expanded withing " and " but not within { and }.Then you need to backslash protect other special characters such as [ and ] as they are going to be performed in double quotes. Here's an example of the sort of thing you might end up with: regexp "\[\[:space\]\]$demo" $incoming Look in $incoming for a space followed by whatever's in $demo This page is a thread posted to the opentalk forum
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