Add support for the Go language

docs/languages.md

@@ -9,6 +9,7 @@ Jupytext works with notebooks in any of the following languages:
 - Coconut
 - F#
 - Gnuplot
+- Go
 - Groovy
 - Haskell
 - IDL

src/jupytext/languages.py

@@ -91,6 +91,7 @@
         "comment_suffix": "*/",
     },
     ".xsh": {"language": "xonsh", "comment": "#"},
+    ".go": {"language": "go", "comment": "//"},
 }
 
 _COMMENT_CHARS = [

tests/data/notebooks/inputs/ipynb_go/hello_world_gonb.ipynb

@@ -0,0 +1,100 @@
+{
+ "cells": [
+  {
+   "cell_type": "markdown",
+   "id": "8795db3a-af9a-4f03-a68d-019330861b54",
+   "metadata": {},
+   "source": [
+    "A notebook that use [GoNB](https://github.com/janpfeifer/gonb)"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "50a2fb21-01b3-46d0-9951-f9a1301a85ca",
+   "metadata": {},
+   "source": [
+    "the code below comes from [tutorial.ipynb](https://github.com/janpfeifer/gonb/blob/main/examples/tutorial.ipynb)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "75d8418d-a918-4cc8-b42e-384db01f21ae",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "func main() {\n",
+    "    fmt.Printf(\"Hello World!\")\n",
+    "}"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "3620f46f-efd5-4454-bc29-418297012ce9",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "%%\n",
+    "fmt.Printf(\"Hello World!\")"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "82f4bb1f-3311-4fca-8025-c54c0305dc64",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "import \"github.com/janpfeifer/gonb/gonbui\"\n",
+    "\n",
+    "%%\n",
+    "gonbui.DisplayHtml(`<span style=\"background:pink; color:#111; border-radius: 3px; border: 3px solid orange; font-size: 18px;\">I 🧡 GoNB!</span>`)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "1a5584ff-f346-45cf-95c1-a3e3b7146c6c",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "%%\n",
+    "gonbui.DisplayMarkdown(\"#### Objective\\n\\n1. Have fun coding **Go**;\\n1. Profit...\\n\"+\n",
+    "                       `$$f(x) = \\int_{-\\infty}^{\\infty} e^{-x^2} dx$$`)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "de996381-d92c-4ce6-a135-50cf39288aa1",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "func init_a() {\n",
+    "    fmt.Println(\"init_a\")\n",
+    "}\n",
+    "%%\n",
+    "fmt.Println(\"main\")"
+   ]
+  }
+ ],
+ "metadata": {
+  "kernelspec": {
+   "display_name": "Go (gonb)",
+   "language": "go",
+   "name": "gonb"
+  },
+  "language_info": {
+   "codemirror_mode": "",
+   "file_extension": ".go",
+   "mimetype": "",
+   "name": "go",
+   "nbconvert_exporter": "",
+   "pygments_lexer": "",
+   "version": "go1.21.6"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 5
+}

tests/data/notebooks/outputs/ipynb_to_Rmd/hello_world_gonb.Rmd

@@ -0,0 +1,42 @@
+---
+jupyter:
+  kernelspec:
+    display_name: Go (gonb)
+    language: go
+    name: gonb
+---
+
+A notebook that use [GoNB](https://github.com/janpfeifer/gonb)
+
+
+the code below comes from [tutorial.ipynb](https://github.com/janpfeifer/gonb/blob/main/examples/tutorial.ipynb)
+
+```{go}
+func main() {
+    fmt.Printf("Hello World!")
+}
+```
+
+```{go}
+fmt.Printf("Hello World!")
+```
+
+```{go}
+import "github.com/janpfeifer/gonb/gonbui"
+
+%%
+gonbui.DisplayHtml(`<span style="background:pink; color:#111; border-radius: 3px; border: 3px solid orange; font-size: 18px;">I 🧡 GoNB!</span>`)
+```
+
+```{go}
+gonbui.DisplayMarkdown("#### Objective\n\n1. Have fun coding **Go**;\n1. Profit...\n"+
+                       `$$f(x) = \int_{-\infty}^{\infty} e^{-x^2} dx$$`)
+```
+
+```{go}
+func init_a() {
+    fmt.Println("init_a")
+}
+%%
+fmt.Println("main")
+```

tests/data/notebooks/outputs/ipynb_to_hydrogen/hello_world_gonb.go

@@ -0,0 +1,41 @@
+// -*- coding: utf-8 -*-
+// ---
+// jupyter:
+//   kernelspec:
+//     display_name: Go (gonb)
+//     language: go
+//     name: gonb
+// ---
+
+// %% [markdown]
+// A notebook that use [GoNB](https://github.com/janpfeifer/gonb)
+
+// %% [markdown]
+// the code below comes from [tutorial.ipynb](https://github.com/janpfeifer/gonb/blob/main/examples/tutorial.ipynb)
+
+// %%
+func main() {
+    fmt.Printf("Hello World!")
+}
+
+// %%
+%%
+fmt.Printf("Hello World!")
+
+// %%
+import "github.com/janpfeifer/gonb/gonbui"
+
+%%
+gonbui.DisplayHtml(`<span style="background:pink; color:#111; border-radius: 3px; border: 3px solid orange; font-size: 18px;">I 🧡 GoNB!</span>`)
+
+// %%
+%%
+gonbui.DisplayMarkdown("#### Objective\n\n1. Have fun coding **Go**;\n1. Profit...\n"+
+                       `$$f(x) = \int_{-\infty}^{\infty} e^{-x^2} dx$$`)
+
+// %%
+func init_a() {
+    fmt.Println("init_a")
+}
+%%
+fmt.Println("main")

tests/data/notebooks/outputs/ipynb_to_md/hello_world_gonb.md

@@ -0,0 +1,42 @@
+---
+jupyter:
+  kernelspec:
+    display_name: Go (gonb)
+    language: go
+    name: gonb
+---
+
+A notebook that use [GoNB](https://github.com/janpfeifer/gonb)
+
+
+the code below comes from [tutorial.ipynb](https://github.com/janpfeifer/gonb/blob/main/examples/tutorial.ipynb)
+
+```go
+func main() {
+    fmt.Printf("Hello World!")
+}
+```
+
+```go
+fmt.Printf("Hello World!")
+```
+
+```go
+import "github.com/janpfeifer/gonb/gonbui"
+
+%%
+gonbui.DisplayHtml(`<span style="background:pink; color:#111; border-radius: 3px; border: 3px solid orange; font-size: 18px;">I 🧡 GoNB!</span>`)
+```
+
+```go
+gonbui.DisplayMarkdown("#### Objective\n\n1. Have fun coding **Go**;\n1. Profit...\n"+
+                       `$$f(x) = \int_{-\infty}^{\infty} e^{-x^2} dx$$`)
+```
+
+```go
+func init_a() {
+    fmt.Println("init_a")
+}
+%%
+fmt.Println("main")
+```

tests/data/notebooks/outputs/ipynb_to_myst/hello_world_gonb.md

@@ -0,0 +1,44 @@
+---
+kernelspec:
+  display_name: Go (gonb)
+  language: go
+  name: gonb
+---
+
+A notebook that use [GoNB](https://github.com/janpfeifer/gonb)
+
++++
+
+the code below comes from [tutorial.ipynb](https://github.com/janpfeifer/gonb/blob/main/examples/tutorial.ipynb)
+
+```{code-cell}
+func main() {
+    fmt.Printf("Hello World!")
+}
+```
+
+```{code-cell}
+%%
+fmt.Printf("Hello World!")
+```
+
+```{code-cell}
+import "github.com/janpfeifer/gonb/gonbui"
+
+%%
+gonbui.DisplayHtml(`<span style="background:pink; color:#111; border-radius: 3px; border: 3px solid orange; font-size: 18px;">I 🧡 GoNB!</span>`)
+```
+
+```{code-cell}
+%%
+gonbui.DisplayMarkdown("#### Objective\n\n1. Have fun coding **Go**;\n1. Profit...\n"+
+                       `$$f(x) = \int_{-\infty}^{\infty} e^{-x^2} dx$$`)
+```
+
+```{code-cell}
+func init_a() {
+    fmt.Println("init_a")
+}
+%%
+fmt.Println("main")
+```

tests/data/notebooks/outputs/ipynb_to_percent/hello_world_gonb.go

@@ -0,0 +1,39 @@
+// -*- coding: utf-8 -*-
+// ---
+// jupyter:
+//   kernelspec:
+//     display_name: Go (gonb)
+//     language: go
+//     name: gonb
+// ---
+
+// %% [markdown]
+// A notebook that use [GoNB](https://github.com/janpfeifer/gonb)
+
+// %% [markdown]
+// the code below comes from [tutorial.ipynb](https://github.com/janpfeifer/gonb/blob/main/examples/tutorial.ipynb)
+
+// %%
+func main() {
+    fmt.Printf("Hello World!")
+}
+
+// %%
+fmt.Printf("Hello World!")
+
+// %%
+import "github.com/janpfeifer/gonb/gonbui"
+
+%%
+gonbui.DisplayHtml(`<span style="background:pink; color:#111; border-radius: 3px; border: 3px solid orange; font-size: 18px;">I 🧡 GoNB!</span>`)
+
+// %%
+gonbui.DisplayMarkdown("#### Objective\n\n1. Have fun coding **Go**;\n1. Profit...\n"+
+                       `$$f(x) = \int_{-\infty}^{\infty} e^{-x^2} dx$$`)
+
+// %%
+func init_a() {
+    fmt.Println("init_a")
+}
+%%
+fmt.Println("main")

tests/data/notebooks/outputs/ipynb_to_script/hello_world_gonb.go

@@ -0,0 +1,34 @@
+// -*- coding: utf-8 -*-
+// ---
+// jupyter:
+//   kernelspec:
+//     display_name: Go (gonb)
+//     language: go
+//     name: gonb
+// ---
+
+// A notebook that use [GoNB](https://github.com/janpfeifer/gonb)
+
+// the code below comes from [tutorial.ipynb](https://github.com/janpfeifer/gonb/blob/main/examples/tutorial.ipynb)
+
+func main() {
+    fmt.Printf("Hello World!")
+}
+
+fmt.Printf("Hello World!")
+
+// +
+import "github.com/janpfeifer/gonb/gonbui"
+
+%%
+gonbui.DisplayHtml(`<span style="background:pink; color:#111; border-radius: 3px; border: 3px solid orange; font-size: 18px;">I 🧡 GoNB!</span>`)
+// -
+
+gonbui.DisplayMarkdown("#### Objective\n\n1. Have fun coding **Go**;\n1. Profit...\n"+
+                       `$$f(x) = \int_{-\infty}^{\infty} e^{-x^2} dx$$`)
+
+func init_a() {
+    fmt.Println("init_a")
+}
+%%
+fmt.Println("main")