Add markdown preview, update rust.vim

sources_non_forked/markdown-preview.nvim/test/init.vim

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+set nocompatible
+
+" let $NVIM_SRAN_LOG_FILE = expand('~/sran-nvim.log')
+" let $NVIM_SRAN_LOG_LEVEL = 'debug'
+" let $NVIM_MKDP_LOG_FILE = expand('~/mkdp-log.log')
+" let $NVIM_MKDP_LOG_LEVEL = 'debug'
+" let $VIM_MKDP_RPC_LOG_FILE = expand('~/mkdp-rpc-log.log')
+" let $VIM_MKDP_RPC_LOG_LEVEL = 'debug'
+
+
+execute 'set rtp+=' . expand('<sfile>:p:h:h')
+" execute 'set rtp+=' . expand('<sfile>:p:h:h:h') . '/coc.nvim'

sources_non_forked/markdown-preview.nvim/test/test.md

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+# markdown-preview.vim
+
+![image](https://user-images.githubusercontent.com/5492542/47603494-28e90000-da1f-11e8-9079-30646e551e7a.gif =400x200)
+
+## todo
+
+- [x] markdown render: markdown-it
+- [x] markdown highlight
+- [x] markdown css
+- [x] math katex
+- [x] plantuml
+- [x] markdown-it option
+- [x] katex option
+- [x] plantuml option
+- [x] markdown style option
+- [x] highlight style option
+- [x] sync scroll
+- preview page title use the document's name
+- favicon.ico
+- vim support
+- binary support
+- task list
+- meoji
+- cross platform test (mac/linux/windows)
+- ...
+
+# UML example:
+
+@startuml
+Bob -> Alice : hello
+@enduml
+
+
+``` mermaid
+classDiagram
+A-->B
+```
+
+``` mermaid
+classDiagram
+A-->B
+```
+
+### flowchart
+
+``` flowchart
+st=>start: Start|past:>http://www.google.com[blank]
+e=>end: End|future:>http://www.google.com
+op1=>operation: My Operation|past
+op2=>operation: Stuff|current
+sub1=>subroutine: My Subroutine|invalid
+cond=>condition: Yes
+or No?|approved:>http://www.google.com
+c2=>condition: Good idea|rejected
+io=>inputoutput: catch something...|future
+
+st->op1(right)->cond
+cond(yes, right)->c2
+cond(no)->sub1(left)->op1
+c2(yes)->io->e
+c2(no)->op2->e
+```
+
+javascript
+```javascript
+function test() {
+    return 0
+}
+
+console.log('hello world')
+
+test()
+```
+
+bash
+```bash
+# comment
+
+export path=$PATH;/bin
+```
+
+# Maxwell's Equations
+
+
+equation | description
+----------|------------
+$\nabla \cdot \vec{\mathbf{B}}  = 0$ | divergence of $\vec{\mathbf{B}}$ is zero
+$\nabla \times \vec{\mathbf{E}}\, +\, \frac1c\, \frac{\partial\vec{\mathbf{B}}}{\partial t}  = \vec{\mathbf{0}}$ |  curl of $\vec{\mathbf{E}}$ is proportional to the rate of change of $\vec{\mathbf{B}}$
+$\nabla \times \vec{\mathbf{B}} -\, \frac1c\, \frac{\partial\vec{\mathbf{E}}}{\partial t} = \frac{4\pi}{c}\vec{\mathbf{j}}    \nabla \cdot \vec{\mathbf{E}} = 4 \pi \rho$ | _wha?_
+
+$\sqrt{3x-1}+(1+x)^2$
+
+$$\begin{array}{c}
+
+\nabla \times \vec{\mathbf{B}} -\, \frac1c\, \frac{\partial\vec{\mathbf{E}}}{\partial t} &
+= \frac{4\pi}{c}\vec{\mathbf{j}}    \nabla \cdot \vec{\mathbf{E}} & = 4 \pi \rho \\
+
+\nabla \times \vec{\mathbf{E}}\, +\, \frac1c\, \frac{\partial\vec{\mathbf{B}}}{\partial t} & = \vec{\mathbf{0}} \\
+
+\nabla \cdot \vec{\mathbf{B}} & = 0
+
+\end{array}$$
+
+Anything between two $ characters will be treated as TeX math. The opening $ must
+have a non-space character immediately to its right, while the closing $ must
+have a non-space character immediately to its left, and must not be followed
+immediately by a digit. Thus, $20,000 and $30,000 won’t parse as math. If for some
+reason you need to enclose text in literal $ characters, backslash-escape them and
+they won’t be treated as math delimiters.
+
+### chart and mermaid
+
+```chart
+{
+  "type": "pie",
+  "data": {
+    "labels": [
+      "Red",
+      "Blue",
+      "Yellow"
+    ],
+    "datasets": [
+      {
+        "data": [
+          300,
+          50,
+          100
+        ],
+        "backgroundColor": [
+          "#FF6384",
+          "#36A2EB",
+          "#FFCE56"
+        ],
+        "hoverBackgroundColor": [
+          "#FF6384",
+          "#36A2EB",
+          "#FFCE56"
+        ]
+      }
+    ]
+  },
+  "options": {}
+}
+```
+
+### Mermaid example
+
+```mermaid
+gantt
+    dateFormat DD-MM-YYY
+    axisFormat %m/%y
+
+    title Example
+    section example section
+    activity :active, 01-02-2019, 03-08-2019
+```
+
+```mermaid
+graph LR
+A[Christmas] -->|Get money| B(Go shopping)
+```
+
+```mermaid
+graph TD
+A[Christmas] -->|Get money| B(Go shopping)
+B --> C{Let me think}
+C -->|One| D[Laptop]
+C -->|Two| E[iPhone]
+C -->|Three| F[Car]
+```
+
+```mermaid
+classDiagram
+Class01 <|-- AveryLongClass : Cool
+Class03 *-- Class04
+Class05 o-- Class06
+Class07 .. Class08
+Class09 --> C2 : Where am i?
+Class09 --* C3
+Class09 --|> Class07
+Class07 : equals()
+Class07 : Object[] elementData
+Class01 : size()
+Class01 : int chimp
+Class01 : int gorilla
+Class08 <--> C2: Cool label
+```
+
+```mermaid
+sequenceDiagram
+loop every day
+    Alice->>John: Hello John, how are you?
+    John-->>Alice: Great!
+end
+```
+
+``` mermaid
+stateDiagram
+[*] --> Still
+Still --> [*]
+Still --> Moving
+Moving --> Still
+Moving --> Crash
+Crash --> [*]
+```
+
+``` mermaid
+erDiagram
+    CUSTOMER ||--o{ ORDER : places
+    ORDER ||--|{ LINE-ITEM : contains
+    CUSTOMER }|..|{ DELIVERY-ADDRESS : uses
+```