helix: Add a configuration for helix

Taken from
https://github.com/LGUG2Z/helix-vim

helix/.config/helix/config.toml

@@ -0,0 +1,136 @@
+[keys.normal]
+# Quick iteration on config changes
+C-o = ":config-open"
+C-r = ":config-reload"
+
+# Some nice Helix stuff
+C-h = "select_prev_sibling"
+C-j = "shrink_selection"
+C-k = "expand_selection"
+C-l = "select_next_sibling"
+
+# Personal preference
+o = ["open_below", "normal_mode"]
+O = ["open_above", "normal_mode"]
+
+# Muscle memory
+"{" = ["goto_prev_paragraph", "collapse_selection"]
+"}" = ["goto_next_paragraph", "collapse_selection"]
+0   = "goto_line_start"
+"$" = "goto_line_end"
+"^" = "goto_first_nonwhitespace"
+G   = "goto_file_end"
+"%" = "match_brackets"
+V   = ["select_mode", "extend_to_line_bounds"]
+C   = ["extend_to_line_end", "yank_main_selection_to_clipboard", "delete_selection", "insert_mode"]
+D   = ["extend_to_line_end", "yank_main_selection_to_clipboard", "delete_selection"]
+S   = "surround_add" # Would be nice to be able to do something after this but it isn't chainable
+
+# Clipboards over registers ye ye
+x = "delete_selection"
+p = ["paste_clipboard_after", "collapse_selection"]
+P = ["paste_clipboard_before", "collapse_selection"]
+# Would be nice to add ya and yi, but the surround commands can't be chained
+Y = ["extend_to_line_end", "yank_main_selection_to_clipboard", "collapse_selection"]
+
+# Uncanny valley stuff, this makes w and b behave as they do Vim
+w = ["move_next_word_start", "move_char_right", "collapse_selection"]
+W = ["move_next_long_word_start", "move_char_right", "collapse_selection"]
+e = ["move_next_word_end", "collapse_selection"]
+E = ["move_next_long_word_end", "collapse_selection"]
+b = ["move_prev_word_start", "collapse_selection"]
+B = ["move_prev_long_word_start", "collapse_selection"]
+
+# If you want to keep the selection-while-moving behaviour of Helix, this two lines will help a lot,
+# especially if you find having text remain selected while you have switched to insert or append mode
+#
+# There is no real difference if you have overridden the commands bound to 'w', 'e' and 'b' like above
+# But if you really want to get familiar with the Helix way of selecting-while-moving, comment the
+# bindings for 'w', 'e', and 'b' out and leave the bindings for 'i' and 'a' active below. A world of difference!
+i = ["insert_mode", "collapse_selection"]
+a = ["append_mode", "collapse_selection"]
+
+# Undoing the 'd' + motion commands restores the selection which is annoying
+u = ["undo", "collapse_selection"]
+
+# Escape the madness! No more fighting with the cursor! Or with multiple cursors!
+esc = ["collapse_selection", "keep_primary_selection"]
+
+# Search for word under cursor
+"*" = ["move_char_right", "move_prev_word_start", "move_next_word_end", "search_selection", "search_next"]
+"#" = ["move_char_right", "move_prev_word_start", "move_next_word_end", "search_selection", "search_prev"]
+
+# Make j and k behave as they do Vim when soft-wrap is enabled
+j = "move_line_down"
+k = "move_line_up"
+
+# Extend and select commands that expect a manual input can't be chained
+# I've kept d[X] commands here because it's better to at least have the stuff you want to delete
+# selected so that it's just a keystroke away to delete
+[keys.normal.d]
+d    = ["extend_to_line_bounds", "yank_main_selection_to_clipboard", "delete_selection"]
+t    = ["extend_till_char"]
+s    = ["surround_delete"]
+i    = ["select_textobject_inner"]
+a    = ["select_textobject_around"]
+j    = ["select_mode", "extend_to_line_bounds", "extend_line_below", "yank_main_selection_to_clipboard", "delete_selection", "normal_mode"]
+down = ["select_mode", "extend_to_line_bounds", "extend_line_below", "yank_main_selection_to_clipboard", "delete_selection", "normal_mode"]
+k    = ["select_mode", "extend_to_line_bounds", "extend_line_above", "yank_main_selection_to_clipboard", "delete_selection", "normal_mode"]
+up   = ["select_mode", "extend_to_line_bounds", "extend_line_above", "yank_main_selection_to_clipboard", "delete_selection", "normal_mode"]
+G    = ["select_mode", "extend_to_line_bounds", "goto_last_line", "extend_to_line_bounds", "yank_main_selection_to_clipboard", "delete_selection", "normal_mode"]
+w    = ["move_next_word_start", "yank_main_selection_to_clipboard", "delete_selection"]
+W    = ["move_next_long_word_start", "yank_main_selection_to_clipboard", "delete_selection"]
+g    = { g = ["select_mode", "extend_to_line_bounds", "goto_file_start", "extend_to_line_bounds", "yank_main_selection_to_clipboard", "delete_selection", "normal_mode"] }
+
+[keys.normal.y]
+y    = ["extend_to_line_bounds", "yank_main_selection_to_clipboard", "normal_mode", "collapse_selection"]
+j    = ["select_mode", "extend_to_line_bounds", "extend_line_below", "yank_main_selection_to_clipboard", "collapse_selection", "normal_mode"]
+down = ["select_mode", "extend_to_line_bounds", "extend_line_below", "yank_main_selection_to_clipboard", "collapse_selection", "normal_mode"]
+k    = ["select_mode", "extend_to_line_bounds", "extend_line_above", "yank_main_selection_to_clipboard", "collapse_selection", "normal_mode"]
+up   = ["select_mode", "extend_to_line_bounds", "extend_line_above", "yank_main_selection_to_clipboard", "collapse_selection", "normal_mode"]
+G    = ["select_mode", "extend_to_line_bounds", "goto_last_line", "extend_to_line_bounds", "yank_main_selection_to_clipboard", "collapse_selection", "normal_mode"]
+w    = ["move_next_word_start", "yank_main_selection_to_clipboard", "collapse_selection", "normal_mode"]
+W    = ["move_next_long_word_start", "yank_main_selection_to_clipboard", "collapse_selection", "normal_mode"]
+g    = { g = ["select_mode", "extend_to_line_bounds", "goto_file_start", "extend_to_line_bounds", "yank_main_selection_to_clipboard", "collapse_selection", "normal_mode"] }
+
+[keys.insert]
+# Escape the madness! No more fighting with the cursor! Or with multiple cursors!
+esc = ["collapse_selection", "normal_mode"]
+
+[keys.select]
+# Muscle memory
+"{" = ["extend_to_line_bounds", "goto_prev_paragraph"]
+"}" = ["extend_to_line_bounds", "goto_next_paragraph"]
+0   = "goto_line_start"
+"$" = "goto_line_end"
+"^" = "goto_first_nonwhitespace"
+G   = "goto_file_end"
+D   = ["extend_to_line_bounds", "delete_selection", "normal_mode"]
+C   = ["goto_line_start", "extend_to_line_bounds", "change_selection"]
+"%" = "match_brackets"
+S   = "surround_add" # Basically 99% of what I use vim-surround for
+u   = ["switch_to_lowercase", "collapse_selection", "normal_mode"]
+U   = ["switch_to_uppercase", "collapse_selection", "normal_mode"]
+
+# Visual-mode specific muscle memory
+i = "select_textobject_inner"
+a = "select_textobject_around"
+
+# Some extra binds to allow us to insert/append in select mode because it's nice with multiple cursors
+tab = ["insert_mode", "collapse_selection"] # tab is read by most terminal editors as "C-i"
+C-a = ["append_mode", "collapse_selection"]
+
+# Make selecting lines in visual mode behave sensibly
+k = ["extend_line_up", "extend_to_line_bounds"]
+j = ["extend_line_down", "extend_to_line_bounds"]
+
+# Clipboards over registers ye ye
+d = ["yank_main_selection_to_clipboard", "delete_selection"]
+x = ["yank_main_selection_to_clipboard", "delete_selection"]
+y = ["yank_main_selection_to_clipboard", "normal_mode", "flip_selections", "collapse_selection"]
+Y = ["extend_to_line_bounds", "yank_main_selection_to_clipboard", "goto_line_start", "collapse_selection", "normal_mode"]
+p = "replace_selections_with_clipboard" # No life without this
+P = "paste_clipboard_before"
+
+# Escape the madness! No more fighting with the cursor! Or with multiple cursors!
+esc = ["collapse_selection", "keep_primary_selection", "normal_mode"]