From 272a641adacfd9605dae4be17bf87c19252e7d09 Mon Sep 17 00:00:00 2001
From: John Denker <jsd@av8n.com>
Date: Mon, 4 Aug 2014 10:43:14 -0700
Subject: better help msg; better behavior for -addr mode

---
 tools/mail-scan.c | 49 +++++++++++++++++++++++++++----------------------
 1 file changed, 27 insertions(+), 22 deletions(-)

diff --git a/tools/mail-scan.c b/tools/mail-scan.c
index 0ed7465..1047683 100644
--- a/tools/mail-scan.c
+++ b/tools/mail-scan.c
@@ -1,22 +1,5 @@
 ///////////////////
-// skrewt.c
-//
-// scrutinize email
-//
-
-// Hint:
-//     mail-scan +from * | iconv -c \...
-//  | sed 's/.*@//;s/>$//' | sort | uniq -c | sort -nr > some-junk.from-count
-//
-// Also:
-//   grep score=[34] /home/user/Maildir/new/* -l | xargs mail-scan +From | blacklist-update
-// Then:
-//   grep score=[34] /home/user/Maildir/new/* -l | xargs mv-to -i /home/user/Maildir/spam/
-
-/////////////
-// Another hint:  using the "-addr" feature:
-//    mail-scan +x-spam.*:score=[234] /home/jean/Maildir/spam/* -l | \....
-//      xargs mail-scan +from -addr | sort | uniq -c | sort -nr | head -20
+// mail-scan.c
 
 #include <iostream>
 #include <stdlib.h>             /* for exit() */
@@ -50,8 +33,20 @@ void usage(const int sts){
 "    -addr              assume field contains somebody <foo@bar.com>;  print just foo@bar.com\n"
 "\n"
 "\n"
-"  Messages containing the string '-please-bounce-this-' will be rejected.\n"
-"  Messages with no date will be rejected.\n"
+" Hint:\n"
+"     mail-scan +from * | iconv -c ...\n"
+"  | sed 's/.*@//;s/>$//' | sort | uniq -c | sort -nr > some-junk.from-count\n"
+"\n"
+" Also:\n"
+"   grep score=[34] /home/user/Maildir/new/* -l | \\\n"
+"        xargs mail-scan +From | blacklist-update\n"
+" Then:\n"
+"   grep score=[34] /home/user/Maildir/new/* -l | \\\n"
+"        xargs mv-to -i /home/user/Maildir/spam/\n"
+
+" Another hint:  using the '-addr' feature:\n"
+"    mail-scan +x-spam.*:score=[234] /home/jean/Maildir/spam/* -l | \\\n"
+"      xargs mail-scan +from -addr | sort | uniq -c | sort -nr | head -20\n"
 ;
   exit(sts);
 }
@@ -122,7 +117,8 @@ int main(int _argc, const char** _argv){
   int maxlines(0);
   int fname_only(0);
   int addr_mode(0);
-  boost::regex addr_filter(string("<.*@(.*)>"), boost::regex_constants::icase);
+  boost::regex host_filter(string("<.*@(.*)>"), boost::regex_constants::icase);
+  boost::regex addr_filter(string("<(.*@.*)>"), boost::regex_constants::icase);
 
   while (argc) {
     string arg(*argv); argv++; argc--;
@@ -248,7 +244,16 @@ int main(int _argc, const char** _argv){
                    if (boost::regex_search(header, matches, addr_filter)){
                      cout << string(matches[1].first, matches[1].second) << endl;
                    } else {
-                     cerr << "no match, ignoring: " << header << endl;
+                     string hdr(header);
+                     size_t where = hdr.find(':');
+                     if (where != string::npos) {
+                       hdr = ltrim(hdr.substr(1+where));
+                     } else {
+                     // DUBIOUS: print the whole thing
+                       cerr << "Warning, expected a ':', didn't see it"
+                            << endl;
+                     }
+                     cout << hdr << endl;
                    }
                   didprint++;
                   if (maxlines && didprint >= maxlines) goto endfile;
-- 
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