git add: --ignore-removal is a better named --no-all

In the historical context of "git add --all ." that pays attention
to "all kinds of changes" (implying "without ignoring removals"),
the option to countermand it "--no-all" may have made sense, but
because we will be making "--all" the default when a pathspec is
given, it makes more sense to rename the option to a more explicit
"--ignore-removal".  The "--all" option naturally becomes its
negation, "--no-ignore-removal".

Signed-off-by: Junio C Hamano <gitster@pobox.com>

Documentation/git-add.txt

@@ -9,9 +9,9 @@ SYNOPSIS
 --------
 [verse]
 'git add' [-n] [-v] [--force | -f] [--interactive | -i] [--patch | -p]
-	  [--edit | -e] [--[no-]all | [--update | -u]] [--intent-to-add | -N]
-	  [--refresh] [--ignore-errors] [--ignore-missing] [--]
-	  [<pathspec>...]
+	  [--edit | -e] [--[no-]all | --[no-]ignore-removal | [--update | -u]]
+	  [--intent-to-add | -N] [--refresh] [--ignore-errors] [--ignore-missing]
+	  [--] [<pathspec>...]
 
 DESCRIPTION
 -----------
@@ -111,6 +111,7 @@ of Git, hence the form without <pathspec> should not be used.
 
 -A::
 --all::
+--no-ignore-removal::
 	Update the index not only where the working tree has a file
 	matching <pathspec> but also where the index already has an
 	entry.	This adds, modifies, and removes index entries to
@@ -122,6 +123,7 @@ and its subdirectories. This default will change in a future version
 of Git, hence the form without <pathspec> should not be used.
 
 --no-all::
+--ignore-removal::
 	Update the index by adding new files that are unknown to the
 	index and files modified in the working tree, but ignore
 	files that have been removed from the working tree.  This
@@ -130,7 +132,7 @@ of Git, hence the form without <pathspec> should not be used.
 This option is primarily to help the current users of Git, whose
 "git add <pathspec>..." ignores removed files.  In future versions
 of Git, "git add <pathspec>..." will be a synonym to "git add -A
-<pathspec>..." and "git add --no-all <pathspec>..." will behave like
+<pathspec>..." and "git add --ignore-removal <pathspec>..." will behave like
 today's "git add <pathspec>...", ignoring removed files.
 
 -N::

builtin/add.c

@@ -382,6 +382,13 @@ static int ignore_add_errors, intent_to_add, ignore_missing;
 static int addremove = ADDREMOVE_DEFAULT;
 static int addremove_explicit = -1; /* unspecified */
 
+static int ignore_removal_cb(const struct option *opt, const char *arg, int unset)
+{
+	/* if we are told to ignore, we are not adding removals */
+	*(int *)opt->value = !unset ? 0 : 1;
+	return 0;
+}
+
 static struct option builtin_add_options[] = {
 	OPT__DRY_RUN(&show_only, N_("dry run")),
 	OPT__VERBOSE(&verbose, N_("be verbose")),
@@ -393,6 +400,10 @@ static struct option builtin_add_options[] = {
 	OPT_BOOL('u', "update", &take_worktree_changes, N_("update tracked files")),
 	OPT_BOOL('N', "intent-to-add", &intent_to_add, N_("record only the fact that the path will be added later")),
 	OPT_BOOL('A', "all", &addremove_explicit, N_("add changes from all tracked and untracked files")),
+	{ OPTION_CALLBACK, 0, "ignore-removal", &addremove_explicit,
+	  NULL /* takes no arguments */,
+	  N_("ignore paths removed in the working tree (same as --no-all)"),
+	  PARSE_OPT_NOARG, ignore_removal_cb },
 	OPT_BOOL( 0 , "refresh", &refresh_only, N_("don't add, only refresh the index")),
 	OPT_BOOL( 0 , "ignore-errors", &ignore_add_errors, N_("just skip files which cannot be added because of errors")),
 	OPT_BOOL( 0 , "ignore-missing", &ignore_missing, N_("check if - even missing - files are ignored in dry run")),