doc fixes.

git-svn-id: svn://tug.org/texlive/trunk@11363 c570f23f-e606-0410-a88d-b1316a301751

1 files changed, 41 insertions, 16 deletions

diff --git a/Master/tlpkg/TeXLive/TLUtils.pm b/Master/tlpkg/TeXLive/TLUtils.pm
index b3d328f5a44..a0d401c92bf 100644
--- a/Master/tlpkg/TeXLive/TLUtils.pm
+++ b/Master/tlpkg/TeXLive/TLUtils.pm
@@ -1599,6 +1599,10 @@ Write a debugging message, the concatenation of the argument strings.
 The message will be omitted unless C<-v> was specified.  If the log
 file (see L<process_logging_options>) is defined, it also writes there.
 
+This first level debugging message reports on the overall flow of
+work, but does not include repeated messages about processing of each
+package.
+
 =cut
 
 sub debug {
@@ -1611,13 +1615,12 @@ sub debug {
 =item C<ddebug ($str1, $str2, ...)>
 
 Write a deep debugging message, the concatenation of the argument
-strings.  The message will be omitted unless C<-v -v> was specified.  If
-the log file (see L<process_logging_options>) is defined, it also writes
-there.
+strings.  The message will be omitted unless C<-v -v> (or higher) was
+specified.  If the log file (see L<process_logging_options>) is defined,
+it also writes there.
 
-This output is extremely voluminous; for example, every line of input
-when reading the TeX Live Database is reported.  It includes everything
-we ever found useful when debugging.
+This second level debugging message reports messages about processing
+each package, in addition to the first level.
 
 =cut
 
@@ -1626,6 +1629,17 @@ sub ddebug {
   logit(\*STDOUT, 2, "DD:", @_);
 }
 
+=item C<dddebug ($str1, $str2, ...)>
+
+Write the deepest debugging message, the concatenation of the argument
+strings.  The message will be omitted unless C<-v -v -v> was specified.
+If the log file (see L<process_logging_options>) is defined, it also
+writes there.
+
+This third level debugging message reports messages about processing
+each line of any tlpdb files read, in addition to the first and second
+levels.
+
 sub dddebug {
   return if ($::opt_verbosity < 3);
   logit(\*STDOUT, 3, "DDD:", @_);
@@ -1709,16 +1723,24 @@ Omit normal informational messages.
 
 =item B<-v>
 
-Include debugging messages; repeat for maximum debugging, as in C<-v
--v> or C<-vv>.  Further repeats of C<-v>, as in C<-v -v -v>, are accepted but
-ignored.  C<-vvv> is an error.
+Include debugging messages.  With one C<-v>, reports overall flow; with
+C<-v -v> (or C<-vv>), also reports per-package processing; with C<-v -v
+-v> (or C<-vvv>), also reports each line read from any tlpdb files.
+Further repeats of C<-v>, as in C<-v -v -v -v>, are accepted but
+ignored.  C<-vvvv> is an error.
+
+The idea behind these levels is to be able to specify C<-v> to get an
+overall idea of what is going on, but avoid terribly voluminous output
+when processing many packages, as we often are.  When debugging a
+specific problem with a specific package, C<-vv> can help.  When
+debugging problems with parsing tlpdb files, C<-vvv> gives that too.
 
 =item B<-logfile> I<file>
 
-Write both all messages (informational, debugging, warnings) to I<file>,
-in addition to standard output or standard error.  In TeX Live, only the
-installer sets a log file by default, none of other the standard TeX
-Live scripts use this feature.
+Write all messages (informational, debugging, warnings) to I<file>, in
+addition to standard output or standard error.  In TeX Live, only the
+installer sets a log file by default; none of the other standard TeX
+Live scripts use this feature, but you can specify it explicitly.
 
 =back
 
@@ -1732,17 +1754,20 @@ sub process_logging_options {
   $::opt_quiet = 0;
   my $opt_logfile;
   my $opt_Verbosity = 0;
+  my $opt_VERBOSITY = 0;
   # check all the command line options for occurrences of -q and -v;
   # do not report errors.
   my $oldconfig = Getopt::Long::Configure(qw(pass_through permute));
   GetOptions("logfile=s" => \$opt_logfile,
-             "v+" => \$::opt_verbosity,
-             "vv" => \$opt_Verbosity,
-             "q" => \$::opt_quiet);
+             "v+"  => \$::opt_verbosity,
+             "vv"  => \$opt_Verbosity,
+             "vvv" => \$opt_VERBOSITY,
+             "q"   => \$::opt_quiet);
   Getopt::Long::Configure($oldconfig);
   
   # verbosity level, forcing -v -v instead of -vv is too annoying.
   $::opt_verbosity = 2 if $opt_Verbosity;
+  $::opt_verbosity = 3 if $opt_VERBOSITY;
   
   # open log file if one was requested.
   if ($opt_logfile) {