Changed . token to _dot

This change allows the dotfiles to work with chezmoi (e.g: on windows)
and improves grepability with neovim/telescope

dot_config/nushell/nu_scripts/stdlib-candidate/std-rfc/str/xpend.nu

@@ -0,0 +1,39 @@
+# Append a suffix to an input string or list of strings.
+#
+# Examples:
+#   Output 'hello world'
+#   > 'hello' | str append ' world'
+#
+#   Output file names suffixed with '_world'
+#   > ls | get name | str append _world
+export def append [
+    suffix: string
+]: [string -> string, list<string> -> list<string>] {
+    let input = $in
+    let append = { $in + $suffix }
+    if ($input | describe) == string {
+        $input | do $append
+    } else {
+        $input | each $append
+    }
+}
+
+# Prepend a prefix to an input string or list of strings.
+#
+# Examples:
+#   Output 'hello world'
+#   > 'world' | str prepend 'hello '
+#
+#   Output file names prefixed with 'hello_'
+#   > ls | get name | str prepend hello_
+export def prepend [
+    prefix: string
+]: [string -> string, list<string> -> list<string>] {
+    let input = $in
+    let prepend = { $prefix + $in }
+    if ($input | describe) == string {
+        $input | do $prepend
+    } else {
+        $input | each $prepend
+    }
+}