Merge pull request ipython#4349 from takluyver/update-whatsnew

Script to update What's New file

docs/source/whatsnew/development.rst

@@ -14,6 +14,24 @@ This document describes in-flight development work.
 - `%%capture` cell magic now captures the rich display output, not just
   stdout/stderr
 
+Select Notebook Name When Renaming a Notebook
+---------------------------------------------
+
+The default notebook name is Untitled. It's unlikely you want to keep this name
+or part of it when naming your notebook. Instead, IPython will select the text
+in the input field so the user can easily type over the name and change it.
+
+clear_output changes
+--------------------
+
+* There is no longer a 500ms delay when calling ``clear_output``.
+* The ability to clear stderr and stdout individually was removed.
+* A new ``wait`` flag that prevents ``clear_output`` from being executed until new
+  output is available.  This eliminates animation flickering by allowing the
+  user to double buffer the output.
+* The output div height is remembered when the ``wait=True`` flag is used.
+
+.. DO NOT EDIT THIS LINE BEFORE RELEASE. FEATURE INSERTION POINT.
 
 Backwards incompatible changes
 ------------------------------
@@ -24,3 +42,21 @@ Backwards incompatible changes
   their `call` methods for them have been renamed to `preprocess`.
 * The `call` methods of nbconvert post-processsors have been renamed to
   `postprocess`.
+
+* The module ``IPython.core.fakemodule`` has been removed.
+
+* The alias system has been reimplemented to use magic functions. There should be little
+  visible difference while automagics are enabled, as they are by default, but parts of the
+  :class:`~IPython.core.alias.AliasManager` API have been removed.
+
+* We fixed an issue with switching between matplotlib inline and GUI backends,
+  but the fix requires matplotlib 1.1 or newer.  So from now on, we consider
+  matplotlib 1.1 to be the minimally supported version for IPython. Older
+  versions for the most part will work, but we make no guarantees about it.
+
+* The :command:`pycolor` command has been removed. We recommend the much more capable
+  :command:`pygmentize` command from the `Pygments <http://pygments.org/>`_ project.
+  If you need to keep the exact output of :command:`pycolor`, you can still use
+  ``python -m IPython.utils.PyColorize foo.py``.
+
+.. DO NOT EDIT THIS LINE BEFORE RELEASE. INCOMPAT INSERTION POINT.

tools/update_whatsnew.py

@@ -0,0 +1,74 @@
+"""Update the What's New doc (development version)
+
+This collects the snippets from whatsnew/pr/, moves their content into
+whatsnew/development.rst (chronologically ordered), and deletes the snippets.
+"""
+
+import io
+import os
+from os.path import dirname, basename, abspath, join as pjoin
+from subprocess import check_call, check_output
+
+repo_root = dirname(dirname(abspath(__file__)))
+whatsnew_dir = pjoin(repo_root, 'docs', 'source', 'whatsnew')
+pr_dir = pjoin(whatsnew_dir, 'pr')
+target = pjoin(whatsnew_dir, 'development.rst')
+
+FEATURE_MARK = ".. DO NOT EDIT THIS LINE BEFORE RELEASE. FEATURE INSERTION POINT."
+INCOMPAT_MARK = ".. DO NOT EDIT THIS LINE BEFORE RELEASE. INCOMPAT INSERTION POINT."
+
+# 1. Collect the whatsnew snippet files ---------------------------------------
+
+files = set(os.listdir(pr_dir))
+# Ignore explanatory and example files
+files.difference_update({'README.md',
+                         'incompat-switching-to-perl.rst',
+                         'antigravity-feature.rst'}
+                        )
+
+# Absolute paths
+files = {pjoin(pr_dir, f) for f in files}
+
+def getmtime(f):
+    return check_output(['git', 'log', '-1', '--format="%ai"', '--', f])
+
+files = sorted(files, key=getmtime)
+
+features, incompats = [], []
+for path in files:
+    with io.open(path, encoding='utf-8') as f:
+        content = f.read().rstrip()
+    if basename(path).startswith('incompat-'):
+        incompats.append(content)
+    else:
+        features.append(content)
+
+# Put the insertion markers back on the end, so they're ready for next time.
+feature_block = '\n\n'.join(features + [FEATURE_MARK])
+incompat_block = '\n\n'.join(incompats + [INCOMPAT_MARK])
+
+# 2. Update the target file ---------------------------------------------------
+
+with io.open(target, encoding='utf-8') as f:
+    content = f.read()
+
+assert content.count(FEATURE_MARK) == 1
+assert content.count(INCOMPAT_MARK) == 1
+
+content = content.replace(FEATURE_MARK, feature_block)
+content = content.replace(INCOMPAT_MARK, incompat_block)
+
+# Clean trailing whitespace
+content = '\n'.join(l.rstrip() for l in content.splitlines())
+
+with io.open(target, 'w', encoding='utf-8') as f:
+    f.write(content)
+
+# 3. Stage the changes in git -------------------------------------------------
+
+for file in files:
+    check_call(['git', 'rm', file])
+
+check_call(['git', 'add', target])
+
+print("Merged what's new changes. Check the diff and commit the change.")