patch 9.0.0753: some Ex commands are not in the help index
Problem: Some Ex commands are not in the help index.
Solution: Add the missing commands. Add a script to check all Ex commands
are in the help index. (Yee Cheng Chin, closes #11371)
diff --git a/runtime/doc/index.txt b/runtime/doc/index.txt
index 8bf341d..4c0d653 100644
--- a/runtime/doc/index.txt
+++ b/runtime/doc/index.txt
@@ -1150,7 +1150,7 @@
|:!!| :!! repeat last ":!" command
|:#| :# same as ":number"
|:&| :& repeat last ":substitute"
-|:star| :* execute contents of a register
+|:star| :* use the last Visual area, like :'<,'>
|:<| :< shift lines one 'shiftwidth' left
|:=| := print the last line number
|:>| :> shift lines one 'shiftwidth' right
@@ -1277,6 +1277,7 @@
|:debuggreedy| :debugg[reedy] read debug mode commands from normal input
|:def| :def define a Vim9 user function
|:defcompile| :defc[ompile] compile Vim9 user functions in current script
+|:defer| :defer call function when current function is done
|:delcommand| :delc[ommand] delete user-defined command
|:delfunction| :delf[unction] delete a user function
|:delmarks| :delm[arks] delete marks
@@ -1308,6 +1309,7 @@
|:echohl| :echoh[l] set highlighting for echo commands
|:echomsg| :echom[sg] same as :echo, put message in history
|:echon| :echon same as :echo, but without <EOL>
+|:echowindow| :echow[indow] same as :echomsg, but use a popup window
|:else| :el[se] part of an :if command
|:elseif| :elsei[f] part of an :if command
|:emenu| :em[enu] execute a menu by name
@@ -1356,6 +1358,7 @@
|:highlight| :hi[ghlight] specify highlighting methods
|:hide| :hid[e] hide current buffer for a command
|:history| :his[tory] print a history list
+|:horizontal| :hor[izontal] following window command work horizontally
|:insert| :i[nsert] insert text
|:iabbrev| :ia[bbrev] like ":abbrev" but for Insert mode
|:iabclear| :iabc[lear] like ":abclear" but for Insert mode