[gtksourceview/wip/chergert/vim] implement toggle case

[Christian Hergert <chergert src gnome org>]

commit 4fe72df35bde696d272252509a3cc4dc610f2f39
Author: Christian Hergert <chergert redhat com>
Date:   Fri Oct 29 16:06:02 2021 -0700

    implement toggle case
    
    and cleanup some other internal names. we'll use : for public ones that
    we want to expose similar to VIM.

 gtksourceview/vim/gtk-source-vim-command.c | 30 ++++++++++++++++++++++++++++--
 gtksourceview/vim/gtk-source-vim-normal.c  | 10 ++++++++--
 2 files changed, 36 insertions(+), 4 deletions(-)
---
diff --git a/gtksourceview/vim/gtk-source-vim-command.c b/gtksourceview/vim/gtk-source-vim-command.c
index 4428842f..5279c704 100644
--- a/gtksourceview/vim/gtk-source-vim-command.c
+++ b/gtksourceview/vim/gtk-source-vim-command.c
@@ -214,6 +214,31 @@ gtk_source_vim_command_paste_before (GtkSourceVimCommand *self)
        gtk_source_vim_state_end_user_action (GTK_SOURCE_VIM_STATE (self));
 }
 
+static void
+gtk_source_vim_command_toggle_case (GtkSourceVimCommand *self)
+{
+       GtkSourceBuffer *buffer;
+       GtkTextIter iter;
+       GtkTextIter selection;
+
+       buffer = gtk_source_vim_state_get_buffer (GTK_SOURCE_VIM_STATE (self), &iter, &selection);
+
+       gtk_source_vim_state_begin_user_action (GTK_SOURCE_VIM_STATE (self));
+       gtk_source_buffer_change_case (buffer, GTK_SOURCE_CHANGE_CASE_TOGGLE, &iter, &selection);
+       gtk_source_vim_state_end_user_action (GTK_SOURCE_VIM_STATE (self));
+
+       if (gtk_text_iter_ends_line (&iter) &&
+           !gtk_text_iter_starts_line (&iter))
+       {
+               gtk_text_iter_backward_char (&iter);
+               gtk_source_vim_state_select (GTK_SOURCE_VIM_STATE (self), &iter, &iter);
+       }
+
+       gtk_source_vim_state_set_can_repeat (GTK_SOURCE_VIM_STATE (self), TRUE);
+
+       self->ignore_mark = TRUE;
+}
+
 static void
 gtk_source_vim_command_undo (GtkSourceVimCommand *self)
 {
@@ -432,8 +457,9 @@ gtk_source_vim_command_class_init (GtkSourceVimCommandClass *klass)
        ADD_COMMAND (":redo",          gtk_source_vim_command_redo);
        ADD_COMMAND (":yank",          gtk_source_vim_command_yank);
        ADD_COMMAND (":y",             gtk_source_vim_command_yank);
-       ADD_COMMAND (":_paste_after",  gtk_source_vim_command_paste_after);
-       ADD_COMMAND (":_paste_before", gtk_source_vim_command_paste_before);
+       ADD_COMMAND ("paste-after",    gtk_source_vim_command_paste_after);
+       ADD_COMMAND ("paste-before",   gtk_source_vim_command_paste_before);
+       ADD_COMMAND ("toggle-case",    gtk_source_vim_command_toggle_case);
 #undef ADD_COMMAND
 }
 
diff --git a/gtksourceview/vim/gtk-source-vim-normal.c b/gtksourceview/vim/gtk-source-vim-normal.c
index 15c5a91f..ee03ef99 100644
--- a/gtksourceview/vim/gtk-source-vim-normal.c
+++ b/gtksourceview/vim/gtk-source-vim-normal.c
@@ -417,14 +417,20 @@ key_handler_command (GtkSourceVimNormal *self,
                        return TRUE;
 
                case GDK_KEY_p:
-                       gtk_source_vim_normal_begin_command (self, NULL, NULL, ":_paste_after");
+                       gtk_source_vim_normal_begin_command (self, NULL, NULL, "paste-after");
                        return TRUE;
 
                case GDK_KEY_P:
-                       gtk_source_vim_normal_begin_command (self, NULL, NULL, ":_paste_before");
+                       gtk_source_vim_normal_begin_command (self, NULL, NULL, "paste-before");
                        return TRUE;
 
                case GDK_KEY_asciitilde:
+                       gtk_source_vim_normal_begin_command (self,
+                                                            gtk_source_vim_motion_new_forward_char (),
+                                                            NULL,
+                                                            "toggle-case");
+                       return TRUE;
+
                case GDK_KEY_equal:
                case GDK_KEY_plus:
                default: