[iso] fix GRUB boot for newer Arch and derivatives

* Arch recently added a "search --no-floppy --set=root --label <LABEL>" into their
  grub.cfg, which we didn't have provision for patching, which means that, as soon
  as the user changed the label or used an Arch derivative with a label that isn't
  compliant with FAT (e.g. Athena Linux), search, and therefore boot would fail.
* Also alter the code so that we modify for more than one token if needed.
* Closes #2086

src/iso.c

@@ -363,20 +363,23 @@ static void fix_config(const char* psz_fullpath, const char* psz_path, const cha
 	// Workaround for config files requiring an ISO label for kernel append that may be
 	// different from our USB label. Oh, and these labels must have spaces converted to \x20.
 	if ((props->is_cfg) || (props->is_conf)) {
+		// Older versions of GRUB EFI used "linuxefi", newer just use "linux".
+		// Also, in their great wisdom, the openSUSE maintainers added a 'set linux=linux'
+		// line to their grub.cfg, which means that their kernel option token is no longer
+		//'linux' but '$linux'... and we have to add a workaround for that.
+		// Finally, newer Arch and derivatives added an extra "search --label ..." command
+		// in GRUB which we need to cater for in supplement to the kernel line.
+
+		static const char* grub_token[] = { "linux", "linuxefi", "$linux", "search" };
 		iso_label = replace_char(img_report.label, ' ', "\\x20");
 		usb_label = replace_char(img_report.usb_label, ' ', "\\x20");
 		if ((iso_label != NULL) && (usb_label != NULL)) {
 			if (props->is_grub_cfg) {
-				// Older versions of GRUB EFI used "linuxefi", newer just use "linux"
-				if ((replace_in_token_data(src, "linux", iso_label, usb_label, TRUE) != NULL) ||
-					(replace_in_token_data(src, "linuxefi", iso_label, usb_label, TRUE) != NULL) ||
-					// In their great wisdom, the openSUSE maintainers added a 'set linux=linux'
-					// line to their grub.cfg, which means that their kernel option token is no
-					// longer 'linux' but '$linux'... and we have to add a workaround for that.
-					(replace_in_token_data(src, "$linux", iso_label, usb_label, TRUE) != NULL)) {
+				for (int i = 0; i < ARRAYSIZE(grub_token); i++)
+					if (replace_in_token_data(src, grub_token[i], iso_label, usb_label, TRUE) != NULL)
+						modified = TRUE;
+				if (modified)
 					uprintf("  Patched %s: '%s' ➔ '%s'\n", src, iso_label, usb_label);
-					modified = TRUE;
-				}
 			} else if (replace_in_token_data(src, (props->is_conf) ? "options" : "append",
 				iso_label, usb_label, TRUE) != NULL) {
 				uprintf("  Patched %s: '%s' ➔ '%s'\n", src, iso_label, usb_label);

src/rufus.rc

@@ -33,7 +33,7 @@ LANGUAGE LANG_NEUTRAL, SUBLANG_NEUTRAL
 IDD_DIALOG DIALOGEX 12, 12, 232, 326
 STYLE DS_SETFONT | DS_MODALFRAME | DS_CENTER | WS_MINIMIZEBOX | WS_POPUP | WS_CAPTION | WS_SYSMENU
 EXSTYLE WS_EX_ACCEPTFILES
-CAPTION "Rufus 3.21.1943"
+CAPTION "Rufus 3.21.1944"
 FONT 9, "Segoe UI Symbol", 400, 0, 0x0
 BEGIN
     LTEXT           "Drive Properties",IDS_DRIVE_PROPERTIES_TXT,8,6,53,12,NOT WS_GROUP
@@ -396,8 +396,8 @@ END
 //
 
 VS_VERSION_INFO VERSIONINFO
- FILEVERSION 3,21,1943,0
- PRODUCTVERSION 3,21,1943,0
+ FILEVERSION 3,21,1944,0
+ PRODUCTVERSION 3,21,1944,0
  FILEFLAGSMASK 0x3fL
 #ifdef _DEBUG
  FILEFLAGS 0x1L
@@ -415,13 +415,13 @@ BEGIN
             VALUE "Comments", "https://rufus.ie"
             VALUE "CompanyName", "Akeo Consulting"
             VALUE "FileDescription", "Rufus"
-            VALUE "FileVersion", "3.21.1943"
+            VALUE "FileVersion", "3.21.1944"
             VALUE "InternalName", "Rufus"
             VALUE "LegalCopyright", "© 2011-2022 Pete Batard (GPL v3)"
             VALUE "LegalTrademarks", "https://www.gnu.org/licenses/gpl-3.0.html"
             VALUE "OriginalFilename", "rufus-3.21.exe"
             VALUE "ProductName", "Rufus"
-            VALUE "ProductVersion", "3.21.1943"
+            VALUE "ProductVersion", "3.21.1944"
         END
     END
     BLOCK "VarFileInfo"