[SCM] GNU M4 source repository branch, master, updated. cvs-readonly-333-g1b2390f

[Gary V. Vaughan]

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- Log -----------------------------------------------------------------
commit 1b2390f2be02bcf31d9112034de33584596f598e
Author: Gary V. Vaughan <address@hidden>
Date:   Thu Nov 20 22:37:10 2014 +0000

    maint: add forgotten thanks-gen script.
    
    * .gitignore: Don't ignore build-aux/thanks-gen.
    * build-aux/thanks-gen: New script.
    
    Signed-off-by: Gary V. Vaughan <address@hidden>

-----------------------------------------------------------------------

Summary of changes:
 .gitignore           |    1 +
 build-aux/thanks-gen |   20 ++++++++++++++++++++
 2 files changed, 21 insertions(+), 0 deletions(-)
 create mode 100755 build-aux/thanks-gen

diff --git a/.gitignore b/.gitignore
index 18c2027..b196d98 100644
--- a/.gitignore
+++ b/.gitignore
@@ -30,6 +30,7 @@ build-aux/
 !build-aux/gl/
 !build-aux/gnulib/
 !build-aux/m4/
+!build-aux/thanks-gen
 /ChangeLog
 /config.cache
 /config.h
diff --git a/build-aux/thanks-gen b/build-aux/thanks-gen
new file mode 100755
index 0000000..92090ce
--- /dev/null
+++ b/build-aux/thanks-gen
@@ -0,0 +1,20 @@
+#!/usr/bin/perl -nl
+# Use Perl's multi-byte alignment code, via sprintf, while
+# performing a rudimentary check for duplicate names and
+# removing duplicate name,email pairs.
+use Encode;
+
+BEGIN { my (%elide, %seen, %name) }
+
+chomp;
+my ($name, $email) = split '\0', decode ('UTF-8', $_);
+
+if ($elide{"!$name"}) {
+; # ignore this author
+} elsif (index ($name, '!') == 0) {
+  $elide{$name}++;
+} elsif ($seen{$name}++) {
+  warn "$0: NO-THANKS: duplicate name: $name\n";
+} else {
+  print encode ('UTF-8', sprintf ('%-36s', $name)), $email;
+}


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