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/modules/duplicates/mod.nu

@@ -0,0 +1,22 @@
+# duplicates returns the rows that correspond to duplicates of the given column.
+export def duplicates  [
+    column: string # Column to look duplicates at
+    --count(-c) # set it to display the number of times the value is repeated.
+] {
+    group-by {get $column | into string} |
+    transpose |
+    insert count { $in.column1 | flatten | length } |
+    where count > 1 |
+    reject column0 |
+    if  ($count | is-empty) { reject count } else { each { $in } }  |
+    flatten |
+    flatten
+}
+
+# duplicates files recursively finds duplicate files in the current working folder.
+# It uses a heuristic based on duplicate files having the same size.
+export def "duplicates files" [] {
+    do -i {ls **/*} | duplicates size
+}
+
+