[gimp-web] Update GIMP 2.99.4 news.

[Jehan <jehanp src gnome org>]

commit 6dcb72c8aa1f13b1991dd1856e90413be4259e3e
Author: Jehan <jehan girinstud io>
Date:   Sun Dec 20 02:56:31 2020 +0100

    Update GIMP 2.99.4 news.

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 .../2020/2020-12_GIMP-2.99.4_Released/index.md     |  75 ++++++++++++++++++++-
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@@ -204,19 +204,88 @@ for people using graphics tablets, as they can directly start to paint
 on canvas without having first to understand all the inner-settings of
 GIMP paint system (based on the combination of brush and dynamics).
 
+## Font thumbnail adapted for Korean and Japanese languages
+
+Our font list will now display fonts targetted at Korean and Japanese
+writing systems with "한" and "あ" respectively. This will allow to more
+quickly detect fonts useful for your language of choice in a long list.
+
+<figure>
+<img src="{attach}gimp-2.99.4-fonts-CJK.png" alt="Font thumbnails in GIMP 2.99.4"/>
+<figcaption>
+<em>Thumbnails in GIMP 2.99.4 of fonts targetting various writing systems</em>
+</figcaption>
+</figure>
+
+For Korean "한" (han) was chosen (apart from being the first syllable of
+
+Hangeul, the Korean writing system) because of the circle shape in 'ㅎ'
+(hieut) but also its small *hat* which has many stylistic variants and
+is therefore often quite a good hint of stylistic choices made by a font
+designer.
+
+As for "あ", it is the first *kana* in the hiragana syllabary, which is
+one of the main component of the Japanese writing system.
+
+The code logics is based on approximation of probable target lang
+depending on supported characters. It may not show always the ideal
+sample characters, especially for fonts which include a lot characters
+from various scripts but remains globally very useful.
+This is based on existing code, with detection on other writing systems,
+yet not properly for Korean and Japanese yet, which is now fixed.
+
 # New experimental Paint Select tool
 
+Our long-term contributor Thomas Manni is working on a new smart
+selection tool. This new development comes from recognition of the
+limitations of the current "Foreground Select" tool, which unfortunately
+does not work so well for actually segmenting global shapes, often takes
+a lot of time on big images and have memory issues.
+
+Quote from Thomas:
+
+> Foreground select uses a matting algorithm : its goal is to provide an
+> alpha (grey) value for all "unknown" pixels ; generally it should be
+> used only on regions where pixels colors is a mix of foreground and
+> background colors (like hairs or furs)
+
+The new tool instead will be a targeted segmentation" tool: its goal is
+to quickly isolate a specific region in the image ; it provides a binary
+result (full white for the area of interest, full black for all other
+pixels). Right now, if you test it in 2.99.4, you will still find it
+quite slow, but this is only because it is very early development and no
+work has been done on optimization so far, only functionality. Yet we
+expect it to be quite efficient and fast in the end, unlike the
+"Foreground Select" tool which suffers from an inadapted algorithm.
+
+<figure>
+<img src="{attach}gimp-2.99.4-Paintselect-canvas-interactions.png" alt="GIMP 2.99.4: Paint Select tool"/>
+<figcaption>
+<em>Canvas interaction of the new Paint Select tool: quick selection of Wilber in one stroke</em>
+</figcaption>
+</figure>
+
+Of course, this is still an early experiment, therefore it is expected
+not to keep all the hopes too high, just in case. If everything goes as
+planned, it is not sure yet what would happen to the "Foreground Select"
+tool, but it is likely we try to re-target it to focus on details, hair,
+fur and the like with an appropriate updated interaction method adapted
+to tweak selection details, instead of grab a whole shape at once.
+
+# API updates
+## Dialog generation for plug-ins
+
 FIXME
 
-# New generic metadata support API for saving
+## New generic metadata support API for saving
 
 FIXME
 
-# Updated file plug-ins
+## Updated file plug-ins
 
 FIXME
 
-# Dev docs on porting plug-ins to 3.0
+## Dev docs on porting plug-ins to 3.0
 
 FIXME