--- a/git.rst	Thu Dec 04 12:22:57 2014 +0200
+++ b/git.rst	Tue Dec 30 12:59:31 2014 +0200
@@ -163,6 +163,28 @@
   $ git fetch
   $ git log origin/master..master   # or just 'origin/master..'
 
+git analog of 'hg glog'.
+========================
+::
+
+  $ git log --all --graph
+
+Add alias::
+
+  [alias]
+  glog = log --all --graph
+
+Git analog of 'hg rollback'.
+============================
+
+To edit commit message of last commit::
+
+  $ git commit --amend -m "$MSG"
+
+To edit messages of old commits starting from ``$REV``::
+
+  $ git rebase -i $REV
+
 Debug git network operation.
 ============================
 

--- a/lang-comp.rst	Thu Dec 04 12:22:57 2014 +0200
+++ b/lang-comp.rst	Tue Dec 30 12:59:31 2014 +0200
@@ -9,8 +9,9 @@
 About.
 ======
 
-  http://en.wikipedia.org/wiki/Comparison_of_programming_languages
-  http://en.wikipedia.org/wiki/Comparison_of_programming_languages_%28basic_instructions%29
+ * http://en.wikipedia.org/wiki/Measuring_programming_language_popularity
+ * http://en.wikipedia.org/wiki/Comparison_of_programming_languages
+ * http://en.wikipedia.org/wiki/Comparison_of_programming_languages_%28basic_instructions%29
 
 Lang popularity.
 ================
@@ -19,6 +20,8 @@
                 TIOBE Programming Community Index
   http://www.langpop.com/
                 Programming Language Popularity
+  http://lang-index.sourceforge.net/
+    The Transparent Language Popularity Index
   http://www.google.com/trends
                 Google trends (history of search request count).
   http://stackoverflow.com/questions/48997/what-programming-language-is-most-popular-today