Add reverse option for findnext for better reverse finding

With the reverse option, we can do inverse findnext with number prefix.
This commit also import minimist as arguments parsing library.

package.json

@@ -18,6 +18,7 @@
     "editor-adapter": "^0.0.3",
     "esbuild": "^0.14.47",
     "fuse.js": "^6.6.2",
+    "minimist": "^1.2.6",
     "nearley": "^2.20.1",
     "ramda": "^0.28.0",
     "semver-compare": "^1.0.0",

src/excmds.ts

@@ -96,6 +96,7 @@ import semverCompare from "semver-compare"
 import * as hint_util from "@src/lib/hint_util"
 import { OpenMode } from "@src/lib/hint_util"
 import * as Proxy from "@src/lib/proxy"
+import minimist from "minimist"
 
 /**
  * This is used to drive some excmd handling in `composite`.
@@ -1460,15 +1461,17 @@ export function find(...args: string[]) {
 //#content
 export function findnext(...args: string[]) {
     let n = 1
-    let searchFromView = false
+    const option = minimist(args, {
-    if (args.length > 0) {
+        boolean: Array.from("fr"),
-        if (args[0] == '-f' || args[0] == '--search-from-view') {
+        alias: {
-            searchFromView = true
+            f: ["search-from-view", "searchFromView"],
-            args.shift()
+            r: "reverse",
-        }
+        },
-        if (args.length > 0) n = Number(args[0])
+        default: { f: false, r: false },
-    }
+    })
-    return finding.jumpToNextMatch(n, searchFromView)
+    if (option._.length > 0) n = Number(option._[0])
+    if (option.reverse) n = -n
+    return finding.jumpToNextMatch(n, option.searchFromView)
 }
 
 //#content
@@ -2314,7 +2317,7 @@ if (fullscreenApiIsPrefixed) {
 
 /** @hidden */
 //#content
-export async function loadaucmds(cmdType: "DocStart" | "DocLoad" | "DocEnd" | "TabEnter" | "TabLeft" | "FullscreenEnter" | "FullscreenLeft" | "FullscreenChange" | "UriChange" | "HistoryState" ) {
+export async function loadaucmds(cmdType: "DocStart" | "DocLoad" | "DocEnd" | "TabEnter" | "TabLeft" | "FullscreenEnter" | "FullscreenLeft" | "FullscreenChange" | "UriChange" | "HistoryState") {
     const aucmds = await config.getAsync("autocmds", cmdType)
     const ausites = Object.keys(aucmds)
     const aukeyarr = ausites.filter(e => window.document.location.href.search(e) >= 0)
@@ -2727,7 +2730,7 @@ export async function tabopen_helper({ addressarr = [], waitForDom = false }): P
 
     const aucon = new AutoContain()
     if (!container && aucon.autocontainConfigured()) {
-        const [autoContainer, ] = await aucon.getAuconAndProxiesForUrl(address)
+        const [autoContainer] = await aucon.getAuconAndProxiesForUrl(address)
         if (autoContainer && autoContainer !== "firefox-default") {
             container = autoContainer
             logger.debug("tabopen setting container automatically using autocontain directive")
@@ -3423,11 +3426,16 @@ export async function tgroupcreate(name: string) {
         await tabopen(initialUrl)
         promises.push(tgroupTabs(name, true).then(tabs => browserBg.tabs.hide(tabs.map(tab => tab.id))))
     } else {
-        promises.push(browser.tabs.query({currentWindow: true}).then((tabs) => {
+        promises.push(
-            setTabTgroup(name, tabs.map(({ id }) => id))
+            browser.tabs.query({ currentWindow: true }).then(tabs => {
+                setTabTgroup(
+                    name,
+                    tabs.map(({ id }) => id),
+                )
                 // trigger status line update
                 setContentStateGroup(name)
-        }))
+            }),
+        )
         promises.push(setWindowTgroup(name))
     }
 
@@ -3446,7 +3454,7 @@ export async function tgroupcreate(name: string) {
  */
 //#background
 export async function tgroupswitch(name: string) {
-    if (name == await windowTgroup()) {
+    if (name == (await windowTgroup())) {
         throw new Error(`Already on tab group "${name}"`)
     }