tools: email matchin is case insensitive for .mailmap

PR-URL: #39430
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

Author: Trott

tools/update-authors.js

@@ -41,19 +41,21 @@ const mailmap = new CaseIndifferentMap();
 letmatch;
 // Replaced Name <original@example.com>
 if(match=line.match(/^([^<]+)\s+(<[^>]+>)$/)){
-mailmap.set(match[2],{author: match[1]});
+mailmap.set(match[2].toLowerCase(),{
+author: match[1],email: match[2]
+});
 // <replaced@example.com> <original@example.com>
 }elseif(match=line.match(/^<([^>]+)>\s+(<[^>]+>)$/)){
-mailmap.set(match[2],{email: match[1]});
+mailmap.set(match[2].toLowerCase(),{email: match[1]});
 // Replaced Name <replaced@example.com> <original@example.com>
 }elseif(match=line.match(/^([^<]+)\s+(<[^>]+>)\s+(<[^>]+>)$/)){
-mailmap.set(match[3],{
+mailmap.set(match[3].toLowerCase(),{
 author: match[1],email: match[2]
 });
 // Replaced Name <replaced@example.com> Original Name <original@example.com>
 }elseif(match=
 line.match(/^([^<]+)\s+(<[^>]+>)\s+([^<]+)\s+(<[^>]+>)$/)){
-mailmap.set(match[3]+'\0'+match[4],{
+mailmap.set(match[3]+'\0'+match[4].toLowerCase(),{
 author: match[1],email: match[2]
 });
 }else{
@@ -75,8 +77,10 @@ rl.on('line', (line) => {
 if(!match)return;
 
 let{ author, email }=match.groups;
+constemailLower=email.toLowerCase();
 
-constreplacement=mailmap.get(author+'\0'+email)||mailmap.get(email);
+constreplacement=
+mailmap.get(author+'\0'+emailLower)||mailmap.get(emailLower);
 if(replacement){
 ({ author, email }={ author, email, ...replacement});
 }