make search term case insensitive

src/Common.js

@@ -13,8 +13,8 @@ function escape_regex(string) {
     return string.replace(/[.*+?^${}()|[\]\\]/g, '\\$&'); // $& means the whole matched string
 }
 
-export function build_highlight_re(txt,split) {
+export function build_highlight_re(txt,split,option='g') {
-    return txt ? new RegExp(`(${txt.split(split).filter((x)=>!!x).map(escape_regex).join('|')})`,'g') : /^$/g;
+    return txt ? new RegExp(`(${txt.split(split).filter((x)=>!!x).map(escape_regex).join('|')})`,option) : /^$/g;
 }
 
 export function ColoredSpan(props) {

src/Flows.js

@@ -516,7 +516,7 @@ class FlowItemRow extends PureComponent {
             ['nickname',NICKNAME_RE],
         ];
         if(this.props.search_param)
-            hl_rules.push(['search',build_highlight_re(this.props.search_param,' ')]);
+            hl_rules.push(['search',build_highlight_re(this.props.search_param,' ','gi')]);
         let parts=split_text(this.state.info.text,hl_rules);
 
         let quote_id=null;