enhance(main/neovim{,-nightly}): document has('termux') feature flag

Author: TomJo2000

packages/neovim-nightly/build.sh

@@ -4,6 +4,7 @@ TERMUX_PKG_LICENSE="Apache-2.0, VIM License"
 TERMUX_PKG_LICENSE_FILE="LICENSE.txt"
 TERMUX_PKG_MAINTAINER="Joshua Kahn <tom@termux.dev>"
 TERMUX_PKG_VERSION="0.12.0~dev-2435+g18c5f06c9f"
+TERMUX_PKG_REVISION=1
 TERMUX_PKG_SRCURL="https://github.com/neovim/neovim/archive/${TERMUX_PKG_VERSION##*+g}.tar.gz"
 TERMUX_PKG_SHA256=3518260bbe8e755204b8d6fc25d1238be940b7138792fa3934022450c8a959cd
 TERMUX_PKG_REPOLOGY_METADATA_VERSION="${TERMUX_PKG_VERSION%%~*}"
@@ -97,6 +98,11 @@ termux_step_pre_configure() {
 	test -f "$patch" && sed \
 		-e "s%\@TARGET\@%${target}%g" \
 		"$patch" | patch --silent -p1
+
+	# Regenerate the docs to include our added `:h termux` and `:h android` tags.
+	termux_setup_cmake
+	echo "Regenerating docs:"
+	make doc
 }
 
 termux_step_post_make_install() {

packages/neovim-nightly/has-termux.patch

@@ -0,0 +1 @@
+../neovim/has-termux.patch

packages/neovim-nightly/src-nvim-eval-funcs.c.patch

@@ -4,7 +4,7 @@ TERMUX_PKG_LICENSE="Apache-2.0, VIM License"
 TERMUX_PKG_LICENSE_FILE="LICENSE.txt"
 TERMUX_PKG_MAINTAINER="Joshua Kahn <tom@termux.dev>"
 TERMUX_PKG_VERSION="0.11.6"
-TERMUX_PKG_REVISION=2
+TERMUX_PKG_REVISION=3
 TERMUX_PKG_SRCURL="https://github.com/neovim/neovim/archive/refs/tags/v${TERMUX_PKG_VERSION}.tar.gz"
 TERMUX_PKG_SHA256=d1c8e3f484ed1e231fd5f48f53b7345b628e52263d5eef489bb8b73ca8d90fca
 TERMUX_PKG_DEPENDS="libandroid-support, libiconv, libmsgpack, libunibilium, libuv, libvterm (>= 1:0.3-0), lua51-lpeg, luajit, luv, tree-sitter, tree-sitter-parsers, utf8proc"
@@ -67,6 +67,11 @@ termux_step_pre_configure() {
 	test -f "$patch" && sed \
 		-e "s%\@TARGET\@%${target}%g" \
 		"$patch" | patch --silent -p1
+
+	# Regenerate the docs to include our added `:h termux` and `:h android` tags.
+	termux_setup_cmake
+	echo "Regenerating docs:"
+	make doc
 }
 
 termux_step_post_make_install() {

packages/neovim/build.sh

@@ -0,0 +1,28 @@
+diff --git a/src/nvim/eval.lua b/src/nvim/eval.lua
+index 73367ee86b..1c57e0c556 100644
+--- a/src/nvim/eval.lua
++++ b/src/nvim/eval.lua
+@@ -5144,6 +5144,10 @@ M.funcs = {
+       	win32		Windows system (32 or 64 bit).
+       	win64		Windows system (64 bit).
+       	wsl		WSL (Windows Subsystem for Linux) system.
++      	android		Alias for has('termux')
++      	termux		Termux environment (The *termux* and *android*
++      			feature flags are {included additionally}
++      			in Termux's Neovim package.)
+ 
+       					*has-patch*
+       3.  Vim patch. For example the "patch123" feature means that
+diff --git a/src/nvim/eval/funcs.c b/src/nvim/eval/funcs.c
+index 752b367f63..349b7c3a9e 100644
+--- a/src/nvim/eval/funcs.c
++++ b/src/nvim/eval/funcs.c
+@@ -3087,6 +3087,8 @@ static void f_has(typval_T *argvars, typval_T *rettv, EvalFuncData fptr)
+ #ifdef _WIN64
+     "win64",
+ #endif
++    "android",
++    "termux",
+ #ifndef CASE_INSENSITIVE_FILENAME
+     "fname_case",
+ #endif