switch to vuepress

5 files changed, 1315 insertions, 0 deletions

diff --git a/node_modules/opn/index.js b/node_modules/opn/index.js
new file mode 100644
index 00000000..f17902fc
--- /dev/null
+++ b/node_modules/opn/index.js
@@ -0,0 +1,96 @@
+'use strict';
+const path = require('path');
+const childProcess = require('child_process');
+const isWsl = require('is-wsl');
+
+module.exports = (target, opts) => {
+	if (typeof target !== 'string') {
+		return Promise.reject(new Error('Expected a `target`'));
+	}
+
+	opts = Object.assign({wait: true}, opts);
+
+	let cmd;
+	let appArgs = [];
+	let args = [];
+	const cpOpts = {};
+
+	if (Array.isArray(opts.app)) {
+		appArgs = opts.app.slice(1);
+		opts.app = opts.app[0];
+	}
+
+	if (process.platform === 'darwin') {
+		cmd = 'open';
+
+		if (opts.wait) {
+			args.push('-W');
+		}
+
+		if (opts.app) {
+			args.push('-a', opts.app);
+		}
+	} else if (process.platform === 'win32' || isWsl) {
+		cmd = 'cmd' + (isWsl ? '.exe' : '');
+		args.push('/c', 'start', '""', '/b');
+		target = target.replace(/&/g, '^&');
+
+		if (opts.wait) {
+			args.push('/wait');
+		}
+
+		if (opts.app) {
+			args.push(opts.app);
+		}
+
+		if (appArgs.length > 0) {
+			args = args.concat(appArgs);
+		}
+	} else {
+		if (opts.app) {
+			cmd = opts.app;
+		} else {
+			cmd = process.platform === 'android' ? 'xdg-open' : path.join(__dirname, 'xdg-open');
+		}
+
+		if (appArgs.length > 0) {
+			args = args.concat(appArgs);
+		}
+
+		if (!opts.wait) {
+			// `xdg-open` will block the process unless
+			// stdio is ignored and it's detached from the parent
+			// even if it's unref'd
+			cpOpts.stdio = 'ignore';
+			cpOpts.detached = true;
+		}
+	}
+
+	args.push(target);
+
+	if (process.platform === 'darwin' && appArgs.length > 0) {
+		args.push('--args');
+		args = args.concat(appArgs);
+	}
+
+	const cp = childProcess.spawn(cmd, args, cpOpts);
+
+	if (opts.wait) {
+		return new Promise((resolve, reject) => {
+			cp.once('error', reject);
+
+			cp.once('close', code => {
+				if (code > 0) {
+					reject(new Error('Exited with code ' + code));
+					return;
+				}
+
+				resolve(cp);
+			});
+		});
+	}
+
+	cp.unref();
+
+	return Promise.resolve(cp);
+};
diff --git a/node_modules/opn/license b/node_modules/opn/license
new file mode 100644
index 00000000..e7af2f77
--- /dev/null
+++ b/node_modules/opn/license
@@ -0,0 +1,9 @@
+MIT License
+
+Copyright (c) Sindre Sorhus <sindresorhus@gmail.com> (sindresorhus.com)
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/node_modules/opn/package.json b/node_modules/opn/package.json
new file mode 100644
index 00000000..40d6770a
--- /dev/null
+++ b/node_modules/opn/package.json
@@ -0,0 +1,56 @@
+{
+	"name": "opn",
+	"version": "5.4.0",
+	"description": "A better node-open. Opens stuff like websites, files, executables. Cross-platform.",
+	"license": "MIT",
+	"repository": "sindresorhus/opn",
+	"author": {
+		"name": "Sindre Sorhus",
+		"email": "sindresorhus@gmail.com",
+		"url": "sindresorhus.com"
+	},
+	"engines": {
+		"node": ">=4"
+	},
+	"scripts": {
+		"test": "xo"
+	},
+	"files": [
+		"index.js",
+		"xdg-open"
+	],
+	"keywords": [
+		"app",
+		"open",
+		"opn",
+		"opener",
+		"opens",
+		"launch",
+		"start",
+		"xdg-open",
+		"xdg",
+		"default",
+		"cmd",
+		"browser",
+		"editor",
+		"executable",
+		"exe",
+		"url",
+		"urls",
+		"arguments",
+		"args",
+		"spawn",
+		"exec",
+		"child",
+		"process",
+		"website",
+		"file"
+	],
+	"dependencies": {
+		"is-wsl": "^1.1.0"
+	},
+	"devDependencies": {
+		"ava": "^0.25.0",
+		"xo": "^0.20.0"
+	}
+}
diff --git a/node_modules/opn/readme.md b/node_modules/opn/readme.md
new file mode 100644
index 00000000..83bb9a4d
--- /dev/null
+++ b/node_modules/opn/readme.md
@@ -0,0 +1,88 @@
+# opn
+
+> A better [node-open](https://github.com/pwnall/node-open). Opens stuff like websites, files, executables. Cross-platform.
+
+
+#### Why?
+
+- Actively maintained
+- Supports app arguments
+- Safer as it uses `spawn` instead of `exec`
+- Fixes most of the open `node-open` issues
+- Includes the latest [`xdg-open` script](http://cgit.freedesktop.org/xdg/xdg-utils/commit/?id=c55122295c2a480fa721a9614f0e2d42b2949c18) for Linux
+
+
+## Install
+
+```
+$ npm install opn
+```
+
+
+## Usage
+
+```js
+const opn = require('opn');
+
+// Opens the image in the default image viewer
+opn('unicorn.png').then(() => {
+	// image viewer closed
+});
+
+// Opens the url in the default browser
+opn('http://sindresorhus.com');
+
+// Specify the app to open in
+opn('http://sindresorhus.com', {app: 'firefox'});
+
+// Specify app arguments
+opn('http://sindresorhus.com', {app: ['google chrome', '--incognito']});
+```
+
+
+## API
+
+Uses the command `open` on macOS, `start` on Windows and `xdg-open` on other platforms.
+
+### opn(target, [options])
+
+Returns a promise for the [spawned child process](https://nodejs.org/api/child_process.html#child_process_class_childprocess). You would normally not need to use this for anything, but it can be useful if you'd like to attach custom event listeners or perform other operations directly on the spawned process.
+
+#### target
+
+Type: `string`
+
+The thing you want to open. Can be a URL, file, or executable.
+
+Opens in the default app for the file type. For example, URLs opens in your default browser.
+
+#### options
+
+Type: `Object`
+
+##### wait
+
+Type: `boolean`<br>
+Default: `true`
+
+Wait for the opened app to exit before fulfilling the promise. If `false` it's fulfilled immediately when opening the app.
+
+On Windows you have to explicitly specify an app for it to be able to wait.
+
+##### app
+
+Type: `string` `Array`
+
+Specify the app to open the `target` with, or an array with the app and app arguments.
+
+The app name is platform dependent. Don't hard code it in reusable modules. For example, Chrome is `google chrome` on macOS, `google-chrome` on Linux and `chrome` on Windows.
+
+
+## Related
+
+- [opn-cli](https://github.com/sindresorhus/opn-cli) - CLI for this module
+
+
+## License
+
+MIT © [Sindre Sorhus](https://sindresorhus.com)
diff --git a/node_modules/opn/xdg-open b/node_modules/opn/xdg-open
new file mode 100755
index 00000000..faaea7ff
--- /dev/null
+++ b/node_modules/opn/xdg-open
@@ -0,0 +1,1066 @@
+#!/bin/sh
+#---------------------------------------------
+#   xdg-open
+#
+#   Utility script to open a URL in the registered default application.
+#
+#   Refer to the usage() function below for usage.
+#
+#   Copyright 2009-2010, Fathi Boudra <fabo@freedesktop.org>
+#   Copyright 2009-2010, Rex Dieter <rdieter@fedoraproject.org>
+#   Copyright 2006, Kevin Krammer <kevin.krammer@gmx.at>
+#   Copyright 2006, Jeremy White <jwhite@codeweavers.com>
+#
+#   LICENSE:
+#
+#   Permission is hereby granted, free of charge, to any person obtaining a
+#   copy of this software and associated documentation files (the "Software"),
+#   to deal in the Software without restriction, including without limitation
+#   the rights to use, copy, modify, merge, publish, distribute, sublicense,
+#   and/or sell copies of the Software, and to permit persons to whom the
+#   Software is furnished to do so, subject to the following conditions:
+#
+#   The above copyright notice and this permission notice shall be included
+#   in all copies or substantial portions of the Software.
+#
+#   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+#   OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+#   FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+#   THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+#   OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+#   ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+#   OTHER DEALINGS IN THE SOFTWARE.
+#
+#---------------------------------------------
+
+manualpage()
+{
+cat << _MANUALPAGE
+Name
+
+   xdg-open -- opens a file or URL in the user's preferred
+   application
+
+Synopsis
+
+   xdg-open { file | URL }
+
+   xdg-open { --help | --manual | --version }
+
+Description
+
+   xdg-open opens a file or URL in the user's preferred
+   application. If a URL is provided the URL will be opened in the
+   user's preferred web browser. If a file is provided the file
+   will be opened in the preferred application for files of that
+   type. xdg-open supports file, ftp, http and https URLs.
+
+   xdg-open is for use inside a desktop session only. It is not
+   recommended to use xdg-open as root.
+
+Options
+
+   --help
+          Show command synopsis.
+
+   --manual
+          Show this manual page.
+
+   --version
+          Show the xdg-utils version information.
+
+Exit Codes
+
+   An exit code of 0 indicates success while a non-zero exit code
+   indicates failure. The following failure codes can be returned:
+
+   1
+          Error in command line syntax.
+
+   2
+          One of the files passed on the command line did not
+          exist.
+
+   3
+          A required tool could not be found.
+
+   4
+          The action failed.
+
+See Also
+
+   xdg-mime(1), xdg-settings(1), MIME applications associations
+   specification
+
+Examples
+
+xdg-open 'http://www.freedesktop.org/'
+
+   Opens the freedesktop.org website in the user's default
+   browser.
+
+xdg-open /tmp/foobar.png
+
+   Opens the PNG image file /tmp/foobar.png in the user's default
+   image viewing application.
+_MANUALPAGE
+}
+
+usage()
+{
+cat << _USAGE
+   xdg-open -- opens a file or URL in the user's preferred
+   application
+
+Synopsis
+
+   xdg-open { file | URL }
+
+   xdg-open { --help | --manual | --version }
+
+_USAGE
+}
+
+#@xdg-utils-common@
+
+#----------------------------------------------------------------------------
+#   Common utility functions included in all XDG wrapper scripts
+#----------------------------------------------------------------------------
+
+DEBUG()
+{
+  [ -z "${XDG_UTILS_DEBUG_LEVEL}" ] && return 0;
+  [ ${XDG_UTILS_DEBUG_LEVEL} -lt $1 ] && return 0;
+  shift
+  echo "$@" >&2
+}
+
+# This handles backslashes but not quote marks.
+first_word()
+{
+    read first rest
+    echo "$first"
+}
+
+#-------------------------------------------------------------
+# map a binary to a .desktop file
+binary_to_desktop_file()
+{
+    search="${XDG_DATA_HOME:-$HOME/.local/share}:${XDG_DATA_DIRS:-/usr/local/share:/usr/share}"
+    binary="`which "$1"`"
+    binary="`readlink -f "$binary"`"
+    base="`basename "$binary"`"
+    IFS=:
+    for dir in $search; do
+        unset IFS
+        [ "$dir" ] || continue
+        [ -d "$dir/applications" ] || [ -d "$dir/applnk" ] || continue
+        for file in "$dir"/applications/*.desktop "$dir"/applications/*/*.desktop "$dir"/applnk/*.desktop "$dir"/applnk/*/*.desktop; do
+            [ -r "$file" ] || continue
+            # Check to make sure it's worth the processing.
+            grep -q "^Exec.*$base" "$file" || continue
+            # Make sure it's a visible desktop file (e.g. not "preferred-web-browser.desktop").
+            grep -Eq "^(NoDisplay|Hidden)=true" "$file" && continue
+            command="`grep -E "^Exec(\[[^]=]*])?=" "$file" | cut -d= -f 2- | first_word`"
+            command="`which "$command"`"
+            if [ x"`readlink -f "$command"`" = x"$binary" ]; then
+                # Fix any double slashes that got added path composition
+                echo "$file" | sed -e 's,//*,/,g'
+                return
+            fi
+        done
+    done
+}
+
+#-------------------------------------------------------------
+# map a .desktop file to a binary
+desktop_file_to_binary()
+{
+    search="${XDG_DATA_HOME:-$HOME/.local/share}:${XDG_DATA_DIRS:-/usr/local/share:/usr/share}"
+    desktop="`basename "$1"`"
+    IFS=:
+    for dir in $search; do
+        unset IFS
+        [ "$dir" ] && [ -d "$dir/applications" ] || [ -d "$dir/applnk" ] || continue
+        # Check if desktop file contains -
+        if [ "${desktop#*-}" != "$desktop" ]; then
+            vendor=${desktop%-*}
+            app=${desktop#*-}
+            if [ -r $dir/applications/$vendor/$app ]; then
+                file_path=$dir/applications/$vendor/$app
+            elif [ -r $dir/applnk/$vendor/$app ]; then
+                file_path=$dir/applnk/$vendor/$app
+            fi
+        fi
+        if test -z "$file_path" ; then
+            for indir in "$dir"/applications/ "$dir"/applications/*/ "$dir"/applnk/ "$dir"/applnk/*/; do
+                file="$indir/$desktop"
+                if [ -r "$file" ]; then
+                    file_path=$file
+                    break
+                fi
+            done
+        fi
+        if [ -r "$file_path" ]; then
+            # Remove any arguments (%F, %f, %U, %u, etc.).
+            command="`grep -E "^Exec(\[[^]=]*])?=" "$file_path" | cut -d= -f 2- | first_word`"
+            command="`which "$command"`"
+            readlink -f "$command"
+            return
+        fi
+    done
+}
+
+#-------------------------------------------------------------
+# Exit script on successfully completing the desired operation
+
+exit_success()
+{
+    if [ $# -gt 0 ]; then
+        echo "$@"
+        echo
+    fi
+
+    exit 0
+}
+
+
+#-----------------------------------------
+# Exit script on malformed arguments, not enough arguments
+# or missing required option.
+# prints usage information
+
+exit_failure_syntax()
+{
+    if [ $# -gt 0 ]; then
+        echo "xdg-open: $@" >&2
+        echo "Try 'xdg-open --help' for more information." >&2
+    else
+        usage
+        echo "Use 'man xdg-open' or 'xdg-open --manual' for additional info."
+    fi
+
+    exit 1
+}
+
+#-------------------------------------------------------------
+# Exit script on missing file specified on command line
+
+exit_failure_file_missing()
+{
+    if [ $# -gt 0 ]; then
+        echo "xdg-open: $@" >&2
+    fi
+
+    exit 2
+}
+
+#-------------------------------------------------------------
+# Exit script on failure to locate necessary tool applications
+
+exit_failure_operation_impossible()
+{
+    if [ $# -gt 0 ]; then
+        echo "xdg-open: $@" >&2
+    fi
+
+    exit 3
+}
+
+#-------------------------------------------------------------
+# Exit script on failure returned by a tool application
+
+exit_failure_operation_failed()
+{
+    if [ $# -gt 0 ]; then
+        echo "xdg-open: $@" >&2
+    fi
+
+    exit 4
+}
+
+#------------------------------------------------------------
+# Exit script on insufficient permission to read a specified file
+
+exit_failure_file_permission_read()
+{
+    if [ $# -gt 0 ]; then
+        echo "xdg-open: $@" >&2
+    fi
+
+    exit 5
+}
+
+#------------------------------------------------------------
+# Exit script on insufficient permission to write a specified file
+
+exit_failure_file_permission_write()
+{
+    if [ $# -gt 0 ]; then
+        echo "xdg-open: $@" >&2
+    fi
+
+    exit 6
+}
+
+check_input_file()
+{
+    if [ ! -e "$1" ]; then
+        exit_failure_file_missing "file '$1' does not exist"
+    fi
+    if [ ! -r "$1" ]; then
+        exit_failure_file_permission_read "no permission to read file '$1'"
+    fi
+}
+
+check_vendor_prefix()
+{
+    file_label="$2"
+    [ -n "$file_label" ] || file_label="filename"
+    file=`basename "$1"`
+    case "$file" in
+       [[:alpha:]]*-*)
+         return
+         ;;
+    esac
+
+    echo "xdg-open: $file_label '$file' does not have a proper vendor prefix" >&2
+    echo 'A vendor prefix consists of alpha characters ([a-zA-Z]) and is terminated' >&2
+    echo 'with a dash ("-"). An example '"$file_label"' is '"'example-$file'" >&2
+    echo "Use --novendor to override or 'xdg-open --manual' for additional info." >&2
+    exit 1
+}
+
+check_output_file()
+{
+    # if the file exists, check if it is writeable
+    # if it does not exists, check if we are allowed to write on the directory
+    if [ -e "$1" ]; then
+        if [ ! -w "$1" ]; then
+            exit_failure_file_permission_write "no permission to write to file '$1'"
+        fi
+    else
+        DIR=`dirname "$1"`
+        if [ ! -w "$DIR" ] || [ ! -x "$DIR" ]; then
+            exit_failure_file_permission_write "no permission to create file '$1'"
+        fi
+    fi
+}
+
+#----------------------------------------
+# Checks for shared commands, e.g. --help
+
+check_common_commands()
+{
+    while [ $# -gt 0 ] ; do
+        parm="$1"
+        shift
+
+        case "$parm" in
+            --help)
+            usage
+            echo "Use 'man xdg-open' or 'xdg-open --manual' for additional info."
+            exit_success
+            ;;
+
+            --manual)
+            manualpage
+            exit_success
+            ;;
+
+            --version)
+            echo "xdg-open 1.1.3"
+            exit_success
+            ;;
+        esac
+    done
+}
+
+check_common_commands "$@"
+
+[ -z "${XDG_UTILS_DEBUG_LEVEL}" ] && unset XDG_UTILS_DEBUG_LEVEL;
+if [ ${XDG_UTILS_DEBUG_LEVEL-0} -lt 1 ]; then
+    # Be silent
+    xdg_redirect_output=" > /dev/null 2> /dev/null"
+else
+    # All output to stderr
+    xdg_redirect_output=" >&2"
+fi
+
+#--------------------------------------
+# Checks for known desktop environments
+# set variable DE to the desktop environments name, lowercase
+
+detectDE()
+{
+    # see https://bugs.freedesktop.org/show_bug.cgi?id=34164
+    unset GREP_OPTIONS
+
+    if [ -n "${XDG_CURRENT_DESKTOP}" ]; then
+      case "${XDG_CURRENT_DESKTOP}" in
+         # only recently added to menu-spec, pre-spec X- still in use
+         Cinnamon|X-Cinnamon)
+           DE=cinnamon;
+           ;;
+         ENLIGHTENMENT)
+           DE=enlightenment;
+           ;;
+         # GNOME, GNOME-Classic:GNOME, or GNOME-Flashback:GNOME
+         GNOME*)
+           DE=gnome;
+           ;;
+         KDE)
+           DE=kde;
+           ;;
+         # Deepin Desktop Environments
+         DEEPIN|Deepin|deepin)
+           DE=dde;
+           ;;
+         LXDE)
+           DE=lxde;
+           ;;
+         LXQt)
+           DE=lxqt;
+           ;;
+         MATE)
+           DE=mate;
+           ;;
+         XFCE)
+           DE=xfce
+           ;;
+         X-Generic)
+           DE=generic
+           ;;
+      esac
+    fi
+
+    if [ x"$DE" = x"" ]; then
+      # classic fallbacks
+      if [ x"$KDE_FULL_SESSION" != x"" ]; then DE=kde;
+      elif [ x"$GNOME_DESKTOP_SESSION_ID" != x"" ]; then DE=gnome;
+      elif [ x"$MATE_DESKTOP_SESSION_ID" != x"" ]; then DE=mate;
+      elif `dbus-send --print-reply --dest=org.freedesktop.DBus /org/freedesktop/DBus org.freedesktop.DBus.GetNameOwner string:org.gnome.SessionManager > /dev/null 2>&1` ; then DE=gnome;
+      elif xprop -root _DT_SAVE_MODE 2> /dev/null | grep ' = \"xfce4\"$' >/dev/null 2>&1; then DE=xfce;
+      elif xprop -root 2> /dev/null | grep -i '^xfce_desktop_window' >/dev/null 2>&1; then DE=xfce
+      elif echo $DESKTOP | grep -q '^Enlightenment'; then DE=enlightenment;
+      elif [ x"$LXQT_SESSION_CONFIG" != x"" ]; then DE=lxqt;
+      fi
+    fi
+
+    if [ x"$DE" = x"" ]; then
+      # fallback to checking $DESKTOP_SESSION
+      case "$DESKTOP_SESSION" in
+         gnome)
+           DE=gnome;
+           ;;
+         LXDE|Lubuntu)
+           DE=lxde; 
+           ;;
+         MATE)
+           DE=mate;
+           ;;
+         xfce|xfce4|'Xfce Session')
+           DE=xfce;
+           ;;
+      esac
+    fi
+
+    if [ x"$DE" = x"" ]; then
+      # fallback to uname output for other platforms
+      case "$(uname 2>/dev/null)" in 
+        CYGWIN*)
+          DE=cygwin;
+          ;;
+        Darwin)
+          DE=darwin;
+          ;;
+      esac
+    fi
+
+    if [ x"$DE" = x"gnome" ]; then
+      # gnome-default-applications-properties is only available in GNOME 2.x
+      # but not in GNOME 3.x
+      which gnome-default-applications-properties > /dev/null 2>&1  || DE="gnome3"
+    fi
+
+    if [ -f "$XDG_RUNTIME_DIR/flatpak-info" ]; then
+      DE="flatpak"
+    fi
+}
+
+#----------------------------------------------------------------------------
+# kfmclient exec/openURL can give bogus exit value in KDE <= 3.5.4
+# It also always returns 1 in KDE 3.4 and earlier
+# Simply return 0 in such case
+
+kfmclient_fix_exit_code()
+{
+    version=`LC_ALL=C.UTF-8 kde-config --version 2>/dev/null | grep '^KDE'`
+    major=`echo $version | sed 's/KDE.*: \([0-9]\).*/\1/'`
+    minor=`echo $version | sed 's/KDE.*: [0-9]*\.\([0-9]\).*/\1/'`
+    release=`echo $version | sed 's/KDE.*: [0-9]*\.[0-9]*\.\([0-9]\).*/\1/'`
+    test "$major" -gt 3 && return $1
+    test "$minor" -gt 5 && return $1
+    test "$release" -gt 4 && return $1
+    return 0
+}
+
+#----------------------------------------------------------------------------
+# Returns true if there is a graphical display attached.
+
+has_display()
+{
+    if [ -n "$DISPLAY" ] || [ -n "$WAYLAND_DISPLAY" ]; then
+        return 0
+    else
+        return 1
+    fi
+}
+
+# This handles backslashes but not quote marks.
+last_word()
+{
+    read first rest
+    echo "$rest"
+}
+
+# Get the value of a key in a desktop file's Desktop Entry group.
+# Example: Use get_key foo.desktop Exec
+# to get the values of the Exec= key for the Desktop Entry group.
+get_key()
+{
+    local file="${1}"
+    local key="${2}"
+    local desktop_entry=""
+
+    IFS_="${IFS}"
+    IFS=""
+    while read line
+    do
+        case "$line" in
+            "[Desktop Entry]")
+                desktop_entry="y"
+            ;;
+            # Reset match flag for other groups
+            "["*)
+                desktop_entry=""
+            ;;
+            "${key}="*)
+                # Only match Desktop Entry group
+                if [ -n "${desktop_entry}" ]
+                then
+                    echo "${line}" | cut -d= -f 2-
+                fi
+        esac
+    done < "${file}"
+    IFS="${IFS_}"
+}
+
+# Returns true if argument is a file:// URL or path
+is_file_url_or_path()
+{
+    if echo "$1" | grep -q '^file://' \
+            || ! echo "$1" | egrep -q '^[[:alpha:]+\.\-]+:'; then
+        return 0
+    else
+        return 1
+    fi
+}
+
+# If argument is a file URL, convert it to a (percent-decoded) path.
+# If not, leave it as it is.
+file_url_to_path()
+{
+    local file="$1"
+    if echo "$file" | grep -q '^file:///'; then
+        file=${file#file://}
+        file=${file%%#*}
+        file=$(echo "$file" | sed -r 's/\?.*$//')
+        local printf=printf
+        if [ -x /usr/bin/printf ]; then
+            printf=/usr/bin/printf
+        fi
+        file=$($printf "$(echo "$file" | sed -e 's@%\([a-f0-9A-F]\{2\}\)@\\x\1@g')")
+    fi
+    echo "$file"
+}
+
+open_cygwin()
+{
+    cygstart "$1"
+
+    if [ $? -eq 0 ]; then
+        exit_success
+    else
+        exit_failure_operation_failed
+    fi
+}
+
+open_darwin()
+{
+    open "$1"
+
+    if [ $? -eq 0 ]; then
+        exit_success
+    else
+        exit_failure_operation_failed
+    fi
+}
+
+open_kde()
+{
+    if [ -n "${KDE_SESSION_VERSION}" ]; then
+      case "${KDE_SESSION_VERSION}" in
+        4)
+          kde-open "$1"
+        ;;
+        5)
+          kde-open${KDE_SESSION_VERSION} "$1"
+        ;;
+      esac
+    else
+        kfmclient exec "$1"
+        kfmclient_fix_exit_code $?
+    fi
+
+    if [ $? -eq 0 ]; then
+        exit_success
+    else
+        exit_failure_operation_failed
+    fi
+}
+
+open_dde()
+{
+    if dde-open -version >/dev/null 2>&1; then
+        dde-open "$1"
+    else
+        open_generic "$1"
+    fi
+
+    if [ $? -eq 0 ]; then
+        exit_success
+    else
+        exit_failure_operation_failed
+    fi
+}
+
+open_gnome3()
+{
+    if gio help open 2>/dev/null 1>&2; then
+        gio open "$1"
+    elif gvfs-open --help 2>/dev/null 1>&2; then
+        gvfs-open "$1"
+    else
+        open_generic "$1"
+    fi
+
+    if [ $? -eq 0 ]; then
+        exit_success
+    else
+        exit_failure_operation_failed
+    fi
+}
+
+open_gnome()
+{
+    if gio help open 2>/dev/null 1>&2; then
+        gio open "$1"
+    elif gvfs-open --help 2>/dev/null 1>&2; then
+        gvfs-open "$1"
+    elif gnome-open --help 2>/dev/null 1>&2; then
+        gnome-open "$1"
+    else
+        open_generic "$1"
+    fi
+
+    if [ $? -eq 0 ]; then
+        exit_success
+    else
+        exit_failure_operation_failed
+    fi
+}
+
+open_mate()
+{
+    if gio help open 2>/dev/null 1>&2; then
+        gio open "$1"
+    elif gvfs-open --help 2>/dev/null 1>&2; then
+        gvfs-open "$1"
+    elif mate-open --help 2>/dev/null 1>&2; then
+        mate-open "$1"
+    else
+        open_generic "$1"
+    fi
+
+    if [ $? -eq 0 ]; then
+        exit_success
+    else
+        exit_failure_operation_failed
+    fi
+}
+
+open_xfce()
+{
+    if exo-open --help 2>/dev/null 1>&2; then
+        exo-open "$1"
+    elif gio help open 2>/dev/null 1>&2; then
+        gio open "$1"
+    elif gvfs-open --help 2>/dev/null 1>&2; then
+        gvfs-open "$1"
+    else
+        open_generic "$1"
+    fi
+
+    if [ $? -eq 0 ]; then
+        exit_success
+    else
+        exit_failure_operation_failed
+    fi
+}
+
+open_enlightenment()
+{
+    if enlightenment_open --help 2>/dev/null 1>&2; then
+        enlightenment_open "$1"
+    else
+        open_generic "$1"
+    fi
+
+    if [ $? -eq 0 ]; then
+        exit_success
+    else
+        exit_failure_operation_failed
+    fi
+}
+
+open_flatpak()
+{
+    gdbus call --session \
+        --dest org.freedesktop.portal.Desktop \
+        --object-path /org/freedesktop/portal/desktop \
+        --method org.freedesktop.portal.OpenURI.OpenURI \
+        "" "$1" {}
+
+    if [ $? -eq 0 ]; then
+        exit_success
+    else
+        exit_failure_operation_failed
+    fi
+}
+
+#-----------------------------------------
+# Recursively search .desktop file
+
+search_desktop_file()
+{
+    local default="$1"
+    local dir="$2"
+    local target="$3"
+
+    local file=""
+    # look for both vendor-app.desktop, vendor/app.desktop
+    if [ -r "$dir/$default" ]; then
+      file="$dir/$default"
+    elif [ -r "$dir/`echo $default | sed -e 's|-|/|'`" ]; then
+      file="$dir/`echo $default | sed -e 's|-|/|'`"
+    fi
+
+    if [ -r "$file" ] ; then
+        command="$(get_key "${file}" "Exec" | first_word)"
+        command_exec=`which $command 2>/dev/null`
+        icon="$(get_key "${file}" "Icon")"
+        # FIXME: Actually LC_MESSAGES should be used as described in
+        # http://standards.freedesktop.org/desktop-entry-spec/latest/ar01s04.html
+        localised_name="$(get_key "${file}" "Name")"
+        set -- $(get_key "${file}" "Exec" | last_word)
+        # We need to replace any occurrence of "%f", "%F" and
+        # the like by the target file. We examine each
+        # argument and append the modified argument to the
+        # end then shift.
+        local args=$#
+        local replaced=0
+        while [ $args -gt 0 ]; do
+            case $1 in
+                %[c])
+                    replaced=1
+                    arg="${localised_name}"
+                    shift
+                    set -- "$@" "$arg"
+                    ;;
+                %[fFuU])
+                    replaced=1
+                    arg="$target"
+                    shift
+                    set -- "$@" "$arg"
+                    ;;
+                %[i])
+                    replaced=1
+                    shift
+                    set -- "$@" "--icon" "$icon"
+                    ;;
+                *)
+                    arg="$1"
+                    shift
+                    set -- "$@" "$arg"
+                    ;;
+            esac
+            args=$(( $args - 1 ))
+        done
+        [ $replaced -eq 1 ] || set -- "$@" "$target"
+        "$command_exec" "$@"
+
+        if [ $? -eq 0 ]; then
+            exit_success
+        fi
+    fi
+
+    for d in $dir/*/; do
+        [ -d "$d" ] && search_desktop_file "$default" "$d" "$target"
+    done
+}
+
+
+open_generic_xdg_mime()
+{
+    filetype="$2"
+    default=`xdg-mime query default "$filetype"`
+    if [ -n "$default" ] ; then
+        xdg_user_dir="$XDG_DATA_HOME"
+        [ -n "$xdg_user_dir" ] || xdg_user_dir="$HOME/.local/share"
+
+        xdg_system_dirs="$XDG_DATA_DIRS"
+        [ -n "$xdg_system_dirs" ] || xdg_system_dirs=/usr/local/share/:/usr/share/
+
+DEBUG 3 "$xdg_user_dir:$xdg_system_dirs"
+        for x in `echo "$xdg_user_dir:$xdg_system_dirs" | sed 's/:/ /g'`; do
+            search_desktop_file "$default" "$x/applications/" "$1"
+        done
+    fi
+}
+
+open_generic_xdg_file_mime()
+{
+    filetype=`xdg-mime query filetype "$1" | sed "s/;.*//"`
+    open_generic_xdg_mime "$1" "$filetype"
+}
+
+open_generic_xdg_x_scheme_handler()
+{
+    scheme="`echo $1 | sed -n 's/\(^[[:alnum:]+\.-]*\):.*$/\1/p'`"
+    if [ -n $scheme ]; then
+        filetype="x-scheme-handler/$scheme"
+        open_generic_xdg_mime "$1" "$filetype"
+    fi
+}
+
+has_single_argument()
+{
+  test $# = 1
+}
+
+open_envvar()
+{
+    local oldifs="$IFS"
+    local browser browser_with_arg
+
+    IFS=":"
+    for browser in $BROWSER; do
+        IFS="$oldifs"
+
+        if [ -z "$browser" ]; then
+            continue
+        fi
+
+        if echo "$browser" | grep -q %s; then
+            # Avoid argument injection.
+            # See https://bugs.freedesktop.org/show_bug.cgi?id=103807
+            # URIs don't have IFS characters spaces anyway.
+            has_single_argument $1 && $(printf "$browser" "$1")
+        else
+            $browser "$1"
+        fi
+
+        if [ $? -eq 0 ]; then
+            exit_success
+        fi
+    done
+}
+
+open_generic()
+{
+    if is_file_url_or_path "$1"; then
+        local file="$(file_url_to_path "$1")"
+
+        check_input_file "$file"
+
+        if has_display; then
+            filetype=`xdg-mime query filetype "$file" | sed "s/;.*//"`
+            open_generic_xdg_mime "$file" "$filetype"
+        fi
+
+        if which run-mailcap 2>/dev/null 1>&2; then
+            run-mailcap --action=view "$file"
+            if [ $? -eq 0 ]; then
+                exit_success
+            fi
+        fi
+
+        if has_display && mimeopen -v 2>/dev/null 1>&2; then
+            mimeopen -L -n "$file"
+            if [ $? -eq 0 ]; then
+                exit_success
+            fi
+        fi
+    fi
+
+    if has_display; then
+        open_generic_xdg_x_scheme_handler "$1"
+    fi
+
+    if [ -n "$BROWSER" ]; then
+        open_envvar "$1"
+    fi
+
+    # if BROWSER variable is not set, check some well known browsers instead
+    if [ x"$BROWSER" = x"" ]; then
+        BROWSER=www-browser:links2:elinks:links:lynx:w3m
+        if has_display; then
+            BROWSER=x-www-browser:firefox:iceweasel:seamonkey:mozilla:epiphany:konqueror:chromium:chromium-browser:google-chrome:$BROWSER
+        fi
+    fi
+
+    open_envvar "$1"
+
+    exit_failure_operation_impossible "no method available for opening '$1'"
+}
+
+open_lxde()
+{
+
+    # pcmanfm only knows how to handle file:// urls and filepaths, it seems.
+    if pcmanfm --help >/dev/null 2>&1 && is_file_url_or_path "$1"; then
+        local file="$(file_url_to_path "$1")"
+
+        # handle relative paths
+        if ! echo "$file" | grep -q ^/; then
+            file="$(pwd)/$file"
+        fi
+
+        pcmanfm "$file"
+    else
+        open_generic "$1"
+    fi
+
+    if [ $? -eq 0 ]; then
+        exit_success
+    else
+        exit_failure_operation_failed
+    fi
+}
+
+open_lxqt()
+{
+    open_generic "$1"
+}
+
+[ x"$1" != x"" ] || exit_failure_syntax
+
+url=
+while [ $# -gt 0 ] ; do
+    parm="$1"
+    shift
+
+    case "$parm" in
+      -*)
+        exit_failure_syntax "unexpected option '$parm'"
+        ;;
+
+      *)
+        if [ -n "$url" ] ; then
+            exit_failure_syntax "unexpected argument '$parm'"
+        fi
+        url="$parm"
+        ;;
+    esac
+done
+
+if [ -z "${url}" ] ; then
+    exit_failure_syntax "file or URL argument missing"
+fi
+
+detectDE
+
+if [ x"$DE" = x"" ]; then
+    DE=generic
+fi
+
+DEBUG 2 "Selected DE $DE"
+
+# sanitize BROWSER (avoid caling ourselves in particular)
+case "${BROWSER}" in
+    *:"xdg-open"|"xdg-open":*)
+        BROWSER=$(echo $BROWSER | sed -e 's|:xdg-open||g' -e 's|xdg-open:||g')
+        ;;
+    "xdg-open")
+        BROWSER=
+        ;;
+esac
+
+case "$DE" in
+    kde)
+    open_kde "$url"
+    ;;
+
+    dde)
+    open_dde "$url"
+    ;;
+
+    gnome3|cinnamon)
+    open_gnome3 "$url"
+    ;;
+
+    gnome)
+    open_gnome "$url"
+    ;;
+
+    mate)
+    open_mate "$url"
+    ;;
+
+    xfce)
+    open_xfce "$url"
+    ;;
+
+    lxde)
+    open_lxde "$url"
+    ;;
+
+    lxqt)
+    open_lxqt "$url"
+    ;;
+
+    enlightenment)
+    open_enlightenment "$url"
+    ;;
+
+    cygwin)
+    open_cygwin "$url"
+    ;;
+
+    darwin)
+    open_darwin "$url"
+    ;;
+
+    flatpak)
+    open_flatpak "$url"
+    ;;
+
+    generic)
+    open_generic "$url"
+    ;;
+
+    *)
+    exit_failure_operation_impossible "no method available for opening '$url'"
+    ;;
+esac