162   CONST CHAR16    *Walker;  in IsValidEnvironmentVariableName()  local
164   Walker = NULL;  in IsValidEnvironmentVariableName()
174   for (Walker = BeginPercent + 1; Walker < EndPercent; Walker++) {  in IsValidEnvironmentVariableName()
176         (*Walker >= L'0' && *Walker <= L'9') ||  in IsValidEnvironmentVariableName()
177         (*Walker >= L'A' && *Walker <= L'Z') ||  in IsValidEnvironmentVariableName()
178         (*Walker >= L'a' && *Walker <= L'z') ||  in IsValidEnvironmentVariableName()
179         (*Walker == L'_')  in IsValidEnvironmentVariableName()
181       if (Walker == BeginPercent + 1 && (*Walker >= L'0' && *Walker <= L'9')) {  in IsValidEnvironmentVariableName()
1371   BUFFER_LIST *Walker;  in AddLineToCommandHistory()  local
1394   for ( Walker = (BUFFER_LIST*)GetFirstNode(&ShellInfoObject.ViewingSettings.CommandHistory.Link)  in AddLineToCommandHistory()
1395       ; !IsNull(&ShellInfoObject.ViewingSettings.CommandHistory.Link, &Walker->Link)  in AddLineToCommandHistory()
1396 …; Walker = (BUFFER_LIST*)GetNextNode(&ShellInfoObject.ViewingSettings.CommandHistory.Link, &Walker…  in AddLineToCommandHistory()
1403     Walker = (BUFFER_LIST*)GetFirstNode(&ShellInfoObject.ViewingSettings.CommandHistory.Link);  in AddLineToCommandHistory()
1404     RemoveEntryList(&Walker->Link);  in AddLineToCommandHistory()
1405     if (Walker->Buffer != NULL) {  in AddLineToCommandHistory()
1406       FreePool(Walker->Buffer);  in AddLineToCommandHistory()
1408     FreePool(Walker);  in AddLineToCommandHistory()
2122   CHAR16 *Walker;  in DoHelpUpdate()  local
2134   Walker = *CmdLine;  in DoHelpUpdate()
2135   while(Walker != NULL && *Walker != CHAR_NULL) {  in DoHelpUpdate()
2136     if (!EFI_ERROR(GetNextParameter(&Walker, &CurrentParameter, StrSize(*CmdLine), TRUE))) {  in DoHelpUpdate()
2260   CHAR16                    *Walker;  in RunInternalCommand()  local
2268   for (Walker = NewCmdLine; Walker != NULL && *Walker != CHAR_NULL ; Walker++) {  in RunInternalCommand()
2269     if (*Walker == L'^' && *(Walker+1) == L'#') {  in RunInternalCommand()
2270       CopyMem(Walker, Walker+1, StrSize(Walker) - sizeof(Walker[0]));  in RunInternalCommand()