06d7be056190c14b85e71bc12523f18ea6815b5e
markd
  Mon Dec 7 00:50:29 2020 -0800
BLAT mmap index support merge with master

diff --git src/hg/hgTracks/mainMain.c src/hg/hgTracks/mainMain.c
index 94d5bab..dbe437c 100644
--- src/hg/hgTracks/mainMain.c
+++ src/hg/hgTracks/mainMain.c
@@ -1,75 +1,76 @@
 /* hgTracks - Human Genome browser main cgi script. */
 
 /* Copyright (C) 2013 The Regents of the University of California 
  * See README in this or parent directory for licensing information. */
 
 #include "common.h"
 #include "linefile.h"
 #include "portable.h"
 #include "memalloc.h"
 #include "localmem.h"
 #include "hCommon.h"
 #include "obscure.h"
 #include "dystring.h"
 #include "hash.h"
 #include "cheapcgi.h"
 #include "htmshell.h"
 #include "web.h"
 #include "cart.h"
 #include "hdb.h"
 #include "hui.h"
 #include "hgFind.h"
 #include "hgTracks.h"
 #include "versionInfo.h"
 #include "net.h"
 #include "search.h"
 #include "imageV2.h"
 #include "extTools.h"
 #include "botDelay.h"
 #include "hgConfig.h"
 
 boolean issueBotWarning;
 long enteredMainTime = 0;
 
 int main(int argc, char *argv[])
 {
 enteredMainTime = clock1000();
 measureTime(NULL);
 issueBotWarning = earlyBotCheck(enteredMainTime, "hgTracks", delayFraction, 0, 0, "html");
 browserName = hBrowserName();
 organization = "UCSC";
 
 /* Push very early error handling - this is just
  * for the benefit of the cgiVarExists, which
  * somehow can't be moved effectively into doMiddle. */
 htmlPushEarlyHandlers();
 cgiSpoof(&argc, argv);
 char * link = webTimeStampedLinkToResourceOnFirstCall("HGStyle.css",TRUE); // resource file link
 if (link)                                                                  // wrapped in html
     htmlSetStyle(link);
 
 oldVars = hashNew(10);
 
 if (cgiVarExists("hgt.redirectTool"))
     {
+    // user has selected one of the tools in View > In external tools: Do not plot, just redirect.
     printf("Content-type: text/html\n\n");
     errAbortSetDoContentType(FALSE);
     cart = cartForSession(hUserCookie(), NULL, NULL);
     extToolRedirect(cart, cgiString("hgt.redirectTool"));
     }
 else
     cartHtmlShell("UCSC Genome Browser v"CGI_VERSION, doMiddle, hUserCookie(), excludeVars, oldVars);
 
 // TODO: better place for this ?
 puts("<link rel=\"stylesheet\" href=\"https://maxcdn.bootstrapcdn.com/font-awesome/4.5.0/css/font-awesome.min.css\">\n");
 
 if (measureTiming)
     measureTime("Time to write and close cart");
 if (measureTiming)
     {
     fprintf(stdout, "<span class='timing'>Overall total time: %ld millis<br /></span>\n",
             clock1000() - enteredMainTime);
     }
 cgiExitTime("hgTracks", enteredMainTime);
 return 0;
 }