From 94de573c7f05582cb2ab6e2a7cb81cca31ba6453 Mon Sep 17 00:00:00 2001
From: Josh Rahm <rahm@google.com>
Date: Wed, 9 Apr 2025 03:08:14 +0000
Subject: Add a vertical version of 'iw/iW' with iv/iV

---
 autoload/fall.vim | 44 ++++++++++++++++++++++++++++++++++++++++++++
 plugin/fall.vim   |  8 ++++++++
 2 files changed, 52 insertions(+)

diff --git a/autoload/fall.vim b/autoload/fall.vim
index feccc1a..ac54ba0 100644
--- a/autoload/fall.vim
+++ b/autoload/fall.vim
@@ -114,3 +114,47 @@ function! fall#visual_same_character(dir)
 
   return expr
 endfunction
+
+function! fall#visual_vertical_word(dir, def_class)
+  let start_line = line(".")
+  let line = start_line
+  let column = col(".")
+
+  let start_char = matchstr(getline(line), '\%' . column . 'c.')
+  if (start_char =~# '\s')
+    let class = '\s'
+  elseif (start_char =~# a:def_class)
+    let class = a:def_class
+  else
+    return ""
+  endif
+
+  let expr = ""
+
+  if a:dir =~ 'k'
+    while line > 1
+      let line -= 1
+      if ! (matchstr(getline(line), '\%' . column . 'c.') =~# class)
+        break
+      endif
+      let expr .= 'k'
+    endwhile
+  endif
+
+  if a:dir == 'jk'
+    let expr .= 'o'
+    let line = start_line
+  endif
+
+  if a:dir =~ 'j'
+    while line <= line("$")
+      let line += 1
+      if ! (matchstr(getline(line), '\%' . column . 'c.') =~# class)
+        break
+      endif
+      let expr .= 'j'
+    endwhile
+  endif
+
+  return expr
+endfunction
diff --git a/plugin/fall.vim b/plugin/fall.vim
index 8de1780..a3eb2c5 100644
--- a/plugin/fall.vim
+++ b/plugin/fall.vim
@@ -35,6 +35,14 @@ vnoremap <silent> ii <cmd>exec "normal! "
       \ . "kO"
       \ . fall#fall('k', '^\s*$') . 'j' <cr>
 
+" Selects "vertical words"
+vnoremap <expr> <silent> iv fall#visual_vertical_word("jk", '\k')
+onoremap <silent> iv <cmd>exec "normal! V" . fall#visual_vertical_word("jk", '\k')<cr>
+
+" Selects "vertical WORDS"
+vnoremap <expr> <silent> iV fall#visual_vertical_word("jk", '\S')
+onoremap <silent> iV <cmd>exec "normal! V" . fall#visual_vertical_word("jk", '\S')<cr>
+
 vnoremap <expr> <silent> ic fall#visual_same_character("jk")
 onoremap <silent> ic <cmd>exec "normal! V" . fall#visual_same_character("jk")<cr>
 
-- 
cgit