add fish

fish/README.md

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+---
+title: fish
+homepage: https://github.com/fish-shell/fish-shell
+tagline: |
+  fish is a smart and user-friendly command line shell for Linux, macOS, and the rest of the family.
+---
+
+### Updating `fish`
+
+`webi fish@stable`
+
+Use the `@beta` tag for pre-releases.
+
+## Cheat Sheet
+
+> Finally, a command line shell for the 90s!
+>
+> fish includes features like syntax highlighting, autosuggest-as-you-type, and
+> fancy tab completions that just work, with no configuration required.
+
+!["fish features"](https://i.imgur.com/WVCyf5N.png)
+
+`fish` is an _excellent_ command line shell for day-to-day file browsing and
+running commands (the _BEST_, in fact).
+
+However, it is **NOT** compatible with `bash` so you should still write and run
+your scripts with bash.
+
+This also covers how to
+
+- Run bash scripts with bash
+- Set vim to keep using bash
+- Set fish as the default shell in **Linux**
+- Set fish as the default shell in various Terminals
+  - Terminal.app
+  - iTerm2
+  - Hyper
+  - Alacritty
+- Find fish's config files
+- Set the default shell back to `bash`
+
+### How to run bash scripts from fish
+
+A bash script should have a "bash shebang" (`#!/bin/bash`) as the first line of
+the file:
+
+```bash
+#!/bin/bash
+
+echo "Who am I? I'm $(whoami)."
+```
+
+You can also run bash explicitly:
+
+```bash
+bash ./some-script.sh
+```
+
+### How to set vim to keep using bash
+
+The first line of your `.vimrc` should always be `set shell=/bin/bash`.
+
+`~/.vimrc`:
+
+```vim
+set shell=/bin/bash
+```
+
+### How to make fish the default shell on Linux
+
+This requires editing a protected system file, `/etc/shells`. It is better to
+use the Terminal-specific methods.
+
+First, `fish` must be installed and in the `PATH`.
+
+```bash
+# if you don't see a file path as output, fish is not in the path
+which fish
+```
+
+Second, fish must be in the system-approved list of shells in `/etc/shells`:
+
+```bash
+#!/bin/bash
+
+if ! grep $(which fish) /etc/shells > /dev/null; then
+    sudo bash -c "echo '$(which fish)' >> /etc/shells";
+    echo "added '$(which fish)' to /etc/shells"
+fi
+```
+
+You should use `chsh` to change your shell:
+
+```bash
+#!/bin/bash
+
+sudo chsh -s "$(which fish)" "$(whoami)"
+```
+
+If vim uses `fish` instead of `bash`, annoying errors will happen.
+
+### How to switch to fish
+
+You can simply type `fish` and hit enter to start using fish from any other
+shell.
+
+You can also set is as the default for a particular Terminal, or for your user.
+
+### How to set fish as the Terminal.app shell
+
+Find out where `fish` is:
+
+```bash
+which fish
+```
+
+Then update the Terminal preferences:
+
+```txt
+Terminal > Preferences > General > Shells open with:
+/Users/YOUR_USER/.local/bin/fish
+```
+
+![Terminal.app preferences](https://i.imgur.com/bulS4Vv.png)
+
+Or, you can quit Terminal and change the preferences from the command line:
+
+```bash
+#!/bin/bash
+
+defaults write com.apple.Terminal "Shell" -string "$HOME/.local/bin/fish"
+```
+
+### How to set fish as the iTerm2 shell
+
+Find out where `fish` is:
+
+```bash
+which fish
+```
+
+Then update iTerm2 preferences:
+
+```
+iTerm2 > Preferences > Profiles > General > Command >
+Custom Shell: /Users/YOUR_USER/.local/bin/fish
+```
+
+![iTerm2 Preferences](https://i.imgur.com/VtBUzVH.png)
+
+Or, you can quit iTerm2 and change the preferences from the command line:
+
+```bash
+#!/bin/bash
+
+/usr/libexec/PlistBuddy -c "SET ':New Bookmarks:0:Custom Command' 'Custom Shell'" \
+    ~/Library/Preferences/com.googlecode.iterm2.plist
+
+/usr/libexec/PlistBuddy -c "SET ':New Bookmarks:0:Command' 'Custom Shell' '$HOME/.local/bin/fish'" \
+    ~/Library/Preferences/com.googlecode.iterm2.plist
+```
+
+### How to set fish as the Hyper shell
+
+Hyper is configured with JavaScript.
+
+`~/.hyper.js`:
+
+```js
+module.exports = {
+  config: {
+    // ...
+    shell: process.env.HOME + '/.local/bin/fish'
+  }
+};
+```
+
+### How to set fish as the Alacritty shell
+
+`~/.config/alacritty/alacritty.yml` should contain the shell config:
+
+```yml
+shell:
+  program: /Users/YOUR_USER/.local/bin/fish
+  args:
+    - --login
+```
+
+If you don't yet have an alacritty config, this will do:
+
+```bash
+#!/bin/bash
+
+mkdir -p ~/.config/alacritty
+
+cat << EOF >> ~/.config/alacritty/alacritty.yml:
+shell:
+  program: $HOME/.local/bin/fish
+  args:
+    - --login
+EOF
+```
+
+The default `alacritty.yml` is included as an _asset_ with each
+[Github release](https://github.com/alacritty/alacritty/releases).
+
+### Where is the fish config?
+
+Fish will be installed to the standard user location:
+
+```bash
+~/.local/opt/fish/
+```
+
+It's config will also go in the standard user location:
+
+```bash
+~/.config/fish/config.fish
+```
+
+### How to set the default shell back to bash
+
+See the instructions above for "How to make fish the default shell in _X_", but
+use `/bin/bash` as the path instead of `$HOME/.local/bin/fish`.

fish/install.sh

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+set -e
+set -u
+
+if ! (uname -a | grep -i "darwin" > /dev/null); then
+    echo "No fish installer for Linux yet. Try this instead:"
+    echo "    sudo apt install -y fish"
+    exit 1
+fi
+
+################
+# Install fish #
+################
+
+# Every package should define these 6 variables
+pkg_cmd_name="fish"
+
+pkg_dst_cmd="$HOME/.local/bin/fish"
+pkg_dst="$pkg_dst_cmd"
+
+pkg_src_cmd="$HOME/.local/opt/fish-v$WEBI_VERSION/bin/fish"
+pkg_src_dir="$HOME/.local/opt/fish-v$WEBI_VERSION"
+pkg_src="$pkg_src_cmd"
+
+# pkg_install must be defined by every package
+
+function _macos_post_install() {
+    if ! [ -e "$HOME/.local/bin/fish" ]; then
+        return 0
+    fi
+
+    echo ""
+    echo "Trying to set fish as the default shell..."
+    echo ""
+    # stop the caching of preferences
+    killall cfprefsd
+
+    # Set default Terminal.app shell to fish
+    defaults write com.apple.Terminal "Shell" -string "$HOME/.local/bin/fish"
+    echo "To set 'fish' as the default Terminal.app shell:"
+    echo "    Terminal > Preferences > General > Shells open with:"
+    echo "    $HOME/.local/bin/fish"
+    echo ""
+
+    # Set default iTerm2 shell to fish
+    if [ -e "$HOME/Library/Preferences/com.googlecode.iterm2.plist" ]; then
+        /usr/libexec/PlistBuddy \
+            -c "SET ':New Bookmarks:0:Custom Command' 'Custom Shell'" \
+            $HOME/Library/Preferences/com.googlecode.iterm2.plist
+        /usr/libexec/PlistBuddy \
+            -c "SET ':New Bookmarks:0:Command' $HOME/.local/bin/fish" \
+            $HOME/Library/Preferences/com.googlecode.iterm2.plist
+        echo "To set 'fish' as the default iTerm2 shell:"
+        echo "    iTerm2 > Preferences > Profiles > General > Command >"
+        echo "    Custom Shell: $HOME/.local/bin/fish"
+        echo ""
+    fi
+
+    killall cfprefsd
+}
+
+# always try to reset the default shells
+_macos_post_install
+
+function pkg_install() {
+    mv fish.app/Contents/Resources/base/usr/local "$HOME/.local/opt/fish-v${WEBI_VERSION}"
+
+}
+
+function pkg_post_install() {
+    # don't skip what webi would do automatically
+    webi_post_install
+
+    # try again to update default shells, now that all files should exist
+    _macos_post_install
+}
+
+# pkg_get_current_version is recommended, but (soon) not required
+function pkg_get_current_version() {
+    # 'fish --version' has output in this format:
+    #       fish, version 3.1.2
+    # This trims it down to just the version number:
+    #       3.1.2
+    echo $(fish --version 2>/dev/null | head -n 1 | cut -d ' ' -f 3)
+}

fish/releases.js

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+'use strict';
+
+var github = require('../_common/github.js');
+var owner = 'fish-shell';
+var repo = 'fish-shell';
+
+module.exports = function (request) {
+  return github(request, owner, repo).then(function (all) {
+    all.releases = all.releases
+      .map(function (rel) {
+        // We can extract the macos bins from the .app
+        if (/\.app\.zip$/.test(rel.name)) {
+          rel.os = 'macos';
+          rel.arch = 'amd64';
+          return rel;
+        }
+      })
+      .filter(Boolean);
+    return all;
+  });
+};
+
+if (module === require.main) {
+  module.exports(require('@root/request')).then(function (all) {
+    all = require('../_webi/normalize.js')(all);
+    // just select the first 5 for demonstration
+    all.releases = all.releases.slice(0, 5);
+    console.info(JSON.stringify(all, null, 2));
+  });
+}