misc updates

docs/source/whatsnew/development.rst

@@ -36,7 +36,7 b' released in 2016, and 1.0 in 2013. Last release of the 5 branch was 5.10.0, in'
 may 2020. The few remaining deprecated features have better deprecation warnings
 or errors.
 
-There are many change in IPython 8.0 will will try to describe subsequently, 
+There are many change in IPython 8.0 will will try to describe subsequently,
 
 
 The first on is the integration of the ``stack_data`` package;
@@ -69,7 +69,7 b' Numfocus Small Developer Grant'
 To prepare for Python 3.10 we have also started working on removing reliance and
 any dependency that is not Python 3.10 compatible; that include migrating our
 test suite to pytest, and starting to remove nose. This also mean that the
-``iptest`` command is now gone, and all testing is via pytest. 
+``iptest`` command is now gone, and all testing is via pytest.
 
 This was in bog part thanks the NumFOCUS Small Developer grant, we were able to
 allocate 4000 to hire `Nikita Kniazev @Kojoley <https://github.com/Kojoley>`__
@@ -207,7 +207,148 b' Miscelanious'
 
 Minimum supported
 
-=======
+
+History Range Glob feature
+==========================
+
+Previously, when using ``%history``, users could specify either
+a range of sessions and lines, for example:
+
+.. code-block:: python
+
+   ~8/1-~6/5   # see history from the first line of 8 sessions ago,
+               # to the fifth line of 6 sessions ago.``
+
+Or users could specify a glob pattern:
+
+.. code-block:: python
+
+   -g <pattern>  # glob ALL history for the specified pattern.
+
+However users could *not* specify both.
+
+If a user *did* specify both a range and a glob pattern,
+then the glob pattern would be used (globbing *all* history) *and the range would be ignored*.
+
+---
+
+With this enhancement, if a user specifies both a range and a glob pattern, then the glob pattern will be applied to the specified range of history.
+
+Don't start a multi line cell with sunken parenthesis
+-----------------------------------------------------
+
+From now on IPython will not ask for the next line of input when given a single
+line with more closing than opening brackets. For example, this means that if
+you (mis)type ']]' instead of '[]', a ``SyntaxError`` will show up, instead of
+the ``...:`` prompt continuation.
+
+IPython shell for ipdb interact
+-------------------------------
+
+The ipdb ``interact`` starts an IPython shell instead of Python's built-in ``code.interact()``.
+
+Automatic Vi prompt stripping
+=============================
+
+When pasting code into IPython, it will strip the leading prompt characters if
+there are any. For example, you can paste the following code into the console -
+it will still work, even though each line is prefixed with prompts (`In`,
+`Out`)::
+
+    In [1]: 2 * 2 == 4
+    Out[1]: True
+
+    In [2]: print("This still works as pasted")
+
+
+Previously, this was not the case for the Vi-mode prompts::
+
+    In [1]: [ins] In [13]: 2 * 2 == 4
+       ...: Out[13]: True
+       ...:
+      File "<ipython-input-1-727bb88eaf33>", line 1
+        [ins] In [13]: 2 * 2 == 4
+              ^
+    SyntaxError: invalid syntax
+
+This is now fixed, and Vi prompt prefixes - ``[ins]`` and ``[nav]`` -  are
+skipped just as the normal ``In`` would be.
+
+IPython shell can be started in the Vi mode using ``ipython
+--TerminalInteractiveShell.editing_mode=vi``
+
+Empty History Ranges
+====================
+
+A number of magics that take history ranges can now be used with an empty
+range. These magics are:
+
+ * ``%save``
+ * ``%load``
+ * ``%pastebin``
+ * ``%pycat``
+
+Using them this way will make them take the history of the current session up
+to the point of the magic call (such that the magic itself will not be
+included).
+
+Therefore it is now possible to save the whole history to a file using simple
+``%save <filename>``, load and edit it using ``%load`` (makes for a nice usage
+when followed with :kbd:`F2`), send it to dpaste.org using ``%pastebin``, or
+view the whole thing syntax-highlighted with a single ``%pycat``.
+
+Traceback improvements
+======================
+
+
+UPDATE THIS IN INPUT.
+
+Previously, error tracebacks for errors happening in code cells were showing a hash, the one used for compiling the Python AST::
+
+    In [1]: def foo():
+    ...:     return 3 / 0
+    ...:
+
+    In [2]: foo()
+    ---------------------------------------------------------------------------
+    ZeroDivisionError                         Traceback (most recent call last)
+    <ipython-input-2-c19b6d9633cf> in <module>
+    ----> 1 foo()
+
+    <ipython-input-1-1595a74c32d5> in foo()
+        1 def foo():
+    ----> 2     return 3 / 0
+        3
+
+    ZeroDivisionError: division by zero
+
+The error traceback is now correctly formatted, showing the cell number in which the error happened::
+
+    In [1]: def foo():
+    ...:     return 3 / 0
+    ...:
+
+    In [2]: foo()
+    ---------------------------------------------------------------------------
+    ZeroDivisionError                         Traceback (most recent call last)
+    In [2], in <module>
+    ----> 1 foo()
+
+    In [1], in foo()
+        1 def foo():
+    ----> 2     return 3 / 0
+
+    ZeroDivisionError: division by zero
+
+Remove Deprecated Stuff
+=======================
+
+
+We no longer need to add `extensions` to the PYTHONPATH because that is being
+handled by `load_extension`.
+
+We are also removing Cythonmagic, sympyprinting and rmagic as they are now in
+other packages and no longer need to be inside IPython.
 
 .. DO NOT EDIT THIS LINE BEFORE RELEASE. FEATURE INSERTION POINT.