patch 8.1.0493: argv() and argc() only work on the current argument listv8.1.0493

Problem:    argv() and argc() only work on the current argument list.
Solution:   Add a window ID argument. (Yegappan Lakshmanan, closes #832)

1 files changed, 20 insertions, 11 deletions

diff --git a/runtime/doc/eval.txt b/runtime/doc/eval.txt
index d51da60f84..2e58c854e7 100644
--- a/runtime/doc/eval.txt
+++ b/runtime/doc/eval.txt
@@ -2026,11 +2026,11 @@ append({lnum}, {text})		Number	append {text} below line {lnum}
 appendbufline({expr}, {lnum}, {text})
 				Number	append {text} below line {lnum}
 					in buffer {expr}
-argc()				Number	number of files in the argument list
+argc( [{winid}])		Number	number of files in the argument list
 argidx()			Number	current index in the argument list
 arglistid([{winnr} [, {tabnr}]]) Number	argument list id
-argv({nr})			String	{nr} entry of the argument list
-argv()				List	the argument list
+argv({nr} [, {winid}])		String	{nr} entry of the argument list
+argv([-1, {winid}])		List	the argument list
 assert_beeps({cmd})		Number	assert {cmd} causes a beep
 assert_equal({exp}, {act} [, {msg}])
 				Number	assert {exp} is equal to {act}
@@ -2596,8 +2596,15 @@ appendbufline({expr}, {lnum}, {text})			*appendbufline()*
 			:let failed = appendbufline(13, 0, "# THE START")
 <
 							*argc()*
-argc()		The result is the number of files in the argument list of the
-		current window.  See |arglist|.
+argc([{winid}])
+		The result is the number of files in the argument list.  See
+		|arglist|.
+		If {winid} is not supplied, the argument list of the current
+		window is used.
+		If {winid} is -1, the global argument list is used.
+		Otherwise {winid} specifies the window of which the argument
+		list is used: either the window number or the window ID.
+		Returns -1 if the {winid} argument is invalid.
 
 							*argidx()*
 argidx()	The result is the current index in the argument list.  0 is
@@ -2608,7 +2615,7 @@ arglistid([{winnr} [, {tabnr}]])
 		Return the argument list ID.  This is a number which
 		identifies the argument list being used.  Zero is used for the
 		global argument list.  See |arglist|.
-		Return -1 if the arguments are invalid.
+		Returns -1 if the arguments are invalid.
 
 		Without arguments use the current window.
 		With {winnr} only use this window in the current tab page.
@@ -2617,17 +2624,19 @@ arglistid([{winnr} [, {tabnr}]])
 		{winnr} can be the window number or the |window-ID|.
 
 							*argv()*
-argv([{nr}])	The result is the {nr}th file in the argument list of the
-		current window.  See |arglist|.  "argv(0)" is the first one.
-		Example: >
+argv([{nr} [, {winid}])
+		The result is the {nr}th file in the argument list.  See
+		|arglist|.  "argv(0)" is the first one.  Example: >
 	:let i = 0
 	:while i < argc()
 	:  let f = escape(fnameescape(argv(i)), '.')
 	:  exe 'amenu Arg.' . f . ' :e ' . f . '<CR>'
 	:  let i = i + 1
 	:endwhile
-<		Without the {nr} argument a |List| with the whole |arglist| is
-		returned.
+<		Without the {nr} argument, or when {nr} is -1, a |List| with
+		the whole |arglist| is returned.
+
+		The {winid} argument specifies the window ID, see |argc()|.
 
 assert_beeps({cmd})					*assert_beeps()*
 		Run {cmd} and add an error message to |v:errors| if it does