fix: allow hash character in paths

lib/commands/link.js

@@ -122,7 +122,7 @@ class Link extends ArboristWorkspaceCmd {
       ...this.npm.flatOptions,
       prune: false,
       path: this.npm.prefix,
-      add: names.map(l => `file:${resolve(globalTop, 'node_modules', l)}`),
+      add: names.map(l => `file:${resolve(globalTop, 'node_modules', l).replace(/#/g, '%23')}`),
       save,
       workspaces: this.workspaceNames,
     })
@@ -133,7 +133,7 @@ class Link extends ArboristWorkspaceCmd {
   async linkPkg () {
     const wsp = this.workspacePaths
     const paths = wsp && wsp.length ? wsp : [this.npm.prefix]
-    const add = paths.map(path => `file:${path}`)
+    const add = paths.map(path => `file:${path.replace(/#/g, '%23')}`)
     const globalTop = resolve(this.npm.globalDir, '..')
     const arb = new Arborist({
       ...this.npm.flatOptions,

tap-snapshots/test/lib/commands/link.js.test.cjs

@@ -5,6 +5,11 @@
  * Make sure to inspect the output below.  Do not ignore changes!
  */
 'use strict'
+exports[`test/lib/commands/link.js TAP hash character in working directory path > should create a global link to current pkg, even within path with hash 1`] = `
+{CWD}/test/lib/commands/tap-testdir-link-hash-character-in-working-directory-path/global-prefix/lib/node_modules/test-pkg-link -> {CWD}/test/lib/commands/tap-testdir-link-hash-character-in-working-directory-path/i_like_#_in_my_paths/test-pkg-link
+
+`
+
 exports[`test/lib/commands/link.js TAP link global linked pkg to local nm when using args > should create a local symlink to global pkg 1`] = `
 {CWD}/test/lib/commands/tap-testdir-link-link-global-linked-pkg-to-local-nm-when-using-args/my-project/node_modules/@myscope/bar -> {CWD}/test/lib/commands/tap-testdir-link-link-global-linked-pkg-to-local-nm-when-using-args/global-prefix/lib/node_modules/@myscope/bar
 {CWD}/test/lib/commands/tap-testdir-link-link-global-linked-pkg-to-local-nm-when-using-args/my-project/node_modules/@myscope/linked -> {CWD}/test/lib/commands/tap-testdir-link-link-global-linked-pkg-to-local-nm-when-using-args/scoped-linked

test/lib/commands/link.js

@@ -514,3 +514,39 @@ t.test('--global option', async t => {
     'should throw an useful error'
   )
 })
+
+t.test('hash character in working directory path', async t => {
+  const testdir = t.testdir({
+    'global-prefix': {
+      lib: {
+        node_modules: {
+          a: {
+            'package.json': JSON.stringify({
+              name: 'a',
+              version: '1.0.0',
+            }),
+          },
+        },
+      },
+    },
+    'i_like_#_in_my_paths': {
+      'test-pkg-link': {
+        'package.json': JSON.stringify({
+          name: 'test-pkg-link',
+          version: '1.0.0',
+        }),
+      },
+    },
+  })
+  npm.globalDir = resolve(testdir, 'global-prefix', 'lib', 'node_modules')
+  npm.prefix = resolve(testdir, 'i_like_#_in_my_paths', 'test-pkg-link')
+
+  link.workspacePaths = null
+  await link.exec([]);
+  const links = await printLinks({
+    path: resolve(npm.globalDir, '..'),
+    global: true,
+  })
+
+  t.matchSnapshot(links, 'should create a global link to current pkg, even within path with hash')
+})

workspaces/arborist/lib/arborist/build-ideal-tree.js

@@ -603,7 +603,7 @@ Try using the package name instead, e.g:
     if (filepath) {
       const { name } = spec
       const tree = this.idealTree.target
-      spec = npa(`file:${relpath(tree.path, filepath)}`, tree.path)
+      spec = npa(`file:${relpath(tree.path, filepath).replace(/#/g, '%23')}`, tree.path)
       spec.name = name
     }
     return spec