Update runtime files

5 files changed, 430 insertions, 24 deletions

diff --git a/runtime/indent/nginx.vim b/runtime/indent/nginx.vim
index 8cef7662e0..65506099f4 100644
--- a/runtime/indent/nginx.vim
+++ b/runtime/indent/nginx.vim
@@ -1,19 +1,78 @@
 " Vim indent file
 " Language: nginx.conf
 " Maintainer: Chris Aumann <me@chr4.org>
-" Last Change:  2022 Apr 06
+" Last Change:  2022 Dec 01
 
-if exists("b:did_indent")
-    finish
+" Only load this indent file when no other was loaded.
+if exists('b:did_indent')
+  finish
 endif
 let b:did_indent = 1
 
-setlocal indentexpr=
+setlocal indentexpr=GetNginxIndent()
 
-" cindent actually works for nginx' simple file structure
-setlocal cindent
+setlocal indentkeys=0{,0},0#,!^F,o,O
 
-" Just make sure that the comments are not reset as defs would be.
-setlocal cinkeys-=0#
+let b:undo_indent = 'setl inde< indk<'
 
-let b:undo_indent = "setl inde< cin< cink<"
+" Only define the function once.
+if exists('*GetNginxIndent')
+  finish
+endif
+
+function GetNginxIndent() abort
+  let plnum = s:PrevNotAsBlank(v:lnum - 1)
+
+  " Hit the start of the file, use zero indent.
+  if plnum == 0
+    return 0
+  endif
+
+  let ind = indent(plnum)
+
+  " Add a 'shiftwidth' after '{'
+  if s:AsEndWith(getline(plnum), '{')
+    let ind = ind + shiftwidth()
+  end
+
+  " Subtract a 'shiftwidth' on '}'
+  " This is the part that requires 'indentkeys'.
+  if getline(v:lnum) =~ '^\s*}'
+    let ind = ind - shiftwidth()
+  endif
+
+  let pplnum = s:PrevNotAsBlank(plnum - 1)
+
+  if s:IsLineContinuation(plnum)
+    if !s:IsLineContinuation(pplnum)
+      let ind = ind + shiftwidth()
+    end
+  else
+    if s:IsLineContinuation(pplnum)
+      let ind = ind - shiftwidth()
+    end
+  endif
+
+  return ind
+endfunction
+
+" Find the first line at or above {lnum} that is non-blank and not a comment.
+function s:PrevNotAsBlank(lnum) abort
+  let lnum = prevnonblank(a:lnum)
+  while lnum > 0
+    if getline(lnum) !~ '^\s*#'
+      break
+    endif
+    let lnum = prevnonblank(lnum - 1)
+  endwhile
+  return lnum
+endfunction
+
+" Check whether {line} ends with {pat}, ignoring trailing comments.
+function s:AsEndWith(line, pat) abort
+  return a:line =~ a:pat . '\m\s*\%(#.*\)\?$'
+endfunction
+
+function s:IsLineContinuation(lnum) abort
+  return a:lnum > 0 && !s:AsEndWith(getline(a:lnum), '[;{}]')
+endfunction
diff --git a/runtime/indent/testdir/vb.in b/runtime/indent/testdir/vb.in
new file mode 100644
index 0000000000..1653ae6f80
--- /dev/null
+++ b/runtime/indent/testdir/vb.in
@@ -0,0 +1,134 @@
+' vim: filetype=vb shiftwidth=4 expandtab
+'
+' START_INDENT
+Public Type GEmployeeRecord     ' Create user-defined type. 
+ID As Integer               ' Define elements of data type. 
+Name As String * 20 
+Address As String * 30 
+Phone As Long 
+HireDate As Date 
+End Type 
+
+Public Enum InterfaceColors 
+icMistyRose = &HE1E4FF& 
+icSlateGray = &H908070& 
+icDodgerBlue = &HFF901E& 
+icDeepSkyBlue = &HFFBF00& 
+icSpringGreen = &H7FFF00& 
+icForestGreen = &H228B22& 
+icGoldenrod = &H20A5DA& 
+icFirebrick = &H2222B2& 
+End Enum
+
+Enum SecurityLevel 
+IllegalEntry = -1 
+SecurityLevel1 = 0 
+SecurityLevel2 = 1 
+End Enum 
+
+Public Function TestConditional (number As Integer, ext As String) As Boolean
+Dim inRange As Boolean
+
+Select Case number
+Case <= 0
+inRange = False
+Case > 10
+inRange = False
+Case Else
+inRange = True
+End Select
+
+' This is a special case identified in the indent script.
+Select Case number
+End Select
+
+If ext = ".xlm" Then
+If inRange Then
+TestConditional = True
+Else
+TestConditional = False
+End If
+ElseIf ext = ".xlsx" Then
+If inRange Then
+TestConditional = False
+Else
+TestConditional = True
+End If
+Else
+TestConditional = False
+End If
+End Function
+
+Private Sub TestIterators (lLimit As Integer, uLimit As Integer)
+Dim a() As Variant
+Dim elmt As Variant
+Dim found As Boolean
+Dim indx As Integer
+Const specialValue As Integer = 5
+
+If uLimit < lLimit Then
+Exit Sub
+End If
+
+ReDim a(lLimit To uLimit)
+For indx=lLimit To Ulimit
+a(indx) = 2 * indx
+Next indx
+
+found = False
+For Each elmt in a
+If elmt = specialValue Then
+found = True
+End If
+Next elmt
+
+If found then
+indx = uLimit
+Do While indx >= lLimit
+indx = indx - 1
+Loop
+End If
+
+End Sub
+
+Public Sub TestMultiline (cellAddr As String, rowNbr As Long)
+Dim rng As Range
+
+Set rng = Range(cellAddr)
+With rng
+.Cells(1,1).Value = _
+"Line 1 of multiline string; " & _
+"Line 2 of multiline string; " & _
+"Line 3 of multiline string"
+End With
+
+' The following lines have whitespace after the underscore character
+' and therefore do not form a valid multiline statement.  The indent
+' script correctly treats them as four single line statements contrary
+' to the author's obvious indent.
+rng..Cells(1,1).Value = _ 
+"Line 1 of multiline string; " & _ 
+"Line 2 of multiline string; " & _ 
+"Line 3 of multiline string"
+
+End Sub
+
+Private Sub TestStmtLabel()
+GoTo stmtLabel
+
+' Statement labels are never indented
+stmtLabel:
+
+End Sub
+
+Sub TestTypeKeyword()
+Type EmployeeRecord         ' Create user-defined type. 
+ID As Integer           ' Define elements of data type. 
+Name As String * 20 
+Address As String * 30 
+Phone As Long 
+HireDate As Date 
+End Type 
+Dim varType As EmployeeRecord
+End Sub
+' END_INDENT
diff --git a/runtime/indent/testdir/vb.ok b/runtime/indent/testdir/vb.ok
new file mode 100644
index 0000000000..143c688708
--- /dev/null
+++ b/runtime/indent/testdir/vb.ok
@@ -0,0 +1,134 @@
+' vim: filetype=vb shiftwidth=4 expandtab
+'
+' START_INDENT
+Public Type GEmployeeRecord     ' Create user-defined type. 
+    ID As Integer               ' Define elements of data type. 
+    Name As String * 20 
+    Address As String * 30 
+    Phone As Long 
+    HireDate As Date 
+End Type 
+
+Public Enum InterfaceColors 
+    icMistyRose = &HE1E4FF& 
+    icSlateGray = &H908070& 
+    icDodgerBlue = &HFF901E& 
+    icDeepSkyBlue = &HFFBF00& 
+    icSpringGreen = &H7FFF00& 
+    icForestGreen = &H228B22& 
+    icGoldenrod = &H20A5DA& 
+    icFirebrick = &H2222B2& 
+End Enum
+
+Enum SecurityLevel 
+    IllegalEntry = -1 
+    SecurityLevel1 = 0 
+    SecurityLevel2 = 1 
+End Enum 
+
+Public Function TestConditional (number As Integer, ext As String) As Boolean
+    Dim inRange As Boolean
+
+    Select Case number
+        Case <= 0
+            inRange = False
+        Case > 10
+            inRange = False
+        Case Else
+            inRange = True
+    End Select
+
+    ' This is a special case identified in the indent script.
+    Select Case number
+    End Select
+
+    If ext = ".xlm" Then
+        If inRange Then
+            TestConditional = True
+        Else
+            TestConditional = False
+        End If
+    ElseIf ext = ".xlsx" Then
+        If inRange Then
+            TestConditional = False
+        Else
+            TestConditional = True
+        End If
+    Else
+        TestConditional = False
+    End If
+End Function
+
+Private Sub TestIterators (lLimit As Integer, uLimit As Integer)
+    Dim a() As Variant
+    Dim elmt As Variant
+    Dim found As Boolean
+    Dim indx As Integer
+    Const specialValue As Integer = 5
+
+    If uLimit < lLimit Then
+        Exit Sub
+    End If
+
+    ReDim a(lLimit To uLimit)
+    For indx=lLimit To Ulimit
+        a(indx) = 2 * indx
+    Next indx
+
+    found = False
+    For Each elmt in a
+        If elmt = specialValue Then
+            found = True
+        End If
+    Next elmt
+
+    If found then
+        indx = uLimit
+        Do While indx >= lLimit
+            indx = indx - 1
+        Loop
+    End If
+
+End Sub
+
+Public Sub TestMultiline (cellAddr As String, rowNbr As Long)
+    Dim rng As Range
+
+    Set rng = Range(cellAddr)
+    With rng
+        .Cells(1,1).Value = _
+            "Line 1 of multiline string; " & _
+            "Line 2 of multiline string; " & _
+            "Line 3 of multiline string"
+    End With
+
+    ' The following lines have whitespace after the underscore character
+    ' and therefore do not form a valid multiline statement.  The indent
+    ' script correctly treats them as four single line statements contrary
+    ' to the author's obvious indent.
+    rng..Cells(1,1).Value = _ 
+    "Line 1 of multiline string; " & _ 
+    "Line 2 of multiline string; " & _ 
+    "Line 3 of multiline string"
+
+End Sub
+
+Private Sub TestStmtLabel()
+    GoTo stmtLabel
+
+    ' Statement labels are never indented
+stmtLabel:
+
+End Sub
+
+Sub TestTypeKeyword()
+    Type EmployeeRecord         ' Create user-defined type. 
+        ID As Integer           ' Define elements of data type. 
+        Name As String * 20 
+        Address As String * 30 
+        Phone As Long 
+        HireDate As Date 
+    End Type 
+    Dim varType As EmployeeRecord
+End Sub
+' END_INDENT
diff --git a/runtime/indent/vb.vim b/runtime/indent/vb.vim
index 4d05345565..bc7142f428 100644
--- a/runtime/indent/vb.vim
+++ b/runtime/indent/vb.vim
@@ -1,8 +1,12 @@
 " Vim indent file
 " Language:	VisualBasic (ft=vb) / Basic (ft=basic) / SaxBasic (ft=vb)
 " Author:	Johannes Zellner <johannes@zellner.org>
+" Maintainer:	Michael Soyka (mssr953@gmail.com)
 " Last Change:	Fri, 18 Jun 2004 07:22:42 CEST
 "		Small update 2010 Jul 28 by Maxim Kim
+"		2022/12/15: add support for multiline statements.
+"		2022/12/21: move VbGetIndent from global to script-local scope
+"		2022/12/26: recognize "Type" keyword
 
 if exists("b:did_indent")
     finish
@@ -10,28 +14,33 @@ endif
 let b:did_indent = 1
 
 setlocal autoindent
-setlocal indentexpr=VbGetIndent(v:lnum)
+setlocal indentexpr=s:VbGetIndent(v:lnum)
 setlocal indentkeys&
-setlocal indentkeys+==~else,=~elseif,=~end,=~wend,=~case,=~next,=~select,=~loop,<:>
+setlocal indentkeys+==~else,=~elseif,=~end,=~wend,=~case,=~next,=~select,=~loop
 
 let b:undo_indent = "set ai< indentexpr< indentkeys<"
 
 " Only define the function once.
-if exists("*VbGetIndent")
+if exists("*s:VbGetIndent")
     finish
 endif
 
-fun! VbGetIndent(lnum)
+function s:VbGetIndent(lnum)
+    let this_lnum = a:lnum
+    let this_line = getline(this_lnum)
+
     " labels and preprocessor get zero indent immediately
-    let this_line = getline(a:lnum)
     let LABELS_OR_PREPROC = '^\s*\(\<\k\+\>:\s*$\|#.*\)'
     if this_line =~? LABELS_OR_PREPROC
 	return 0
     endif
+    
+    " Get the current value of "shiftwidth"
+    let bShiftwidth = shiftwidth()
 
     " Find a non-blank line above the current line.
     " Skip over labels and preprocessor directives.
-    let lnum = a:lnum
+    let lnum = this_lnum
     while lnum > 0
 	let lnum = prevnonblank(lnum - 1)
 	let previous_line = getline(lnum)
@@ -45,34 +54,102 @@ fun! VbGetIndent(lnum)
 	return 0
     endif
 
-    let ind = indent(lnum)
+    " Variable "previous_line" now contains the text in buffer line "lnum".
+
+    " Multi-line statements have the underscore character at end-of-line:
+    "
+    "    object.method(arguments, _
+    "                  arguments, _
+    "                  arguments)
+    "
+    " and require extra logic to determine the correct indentation.
+    "
+    " Case 1: Line "lnum" is the first line of a multiline statement.
+    "         Line "lnum" will have a trailing underscore character
+    "         but the preceding non-blank line does not.
+    "         Line "this_lnum" will be indented relative to "lnum".
+    "
+    " Case 2: Line "lnum" is the last line of a multiline statement.
+    "         Line "lnum" will not have a trailing underscore character
+    "         but the preceding non-blank line will.
+    "         Line "this_lnum" will have the same indentation as the starting
+    "         line of the multiline statement.
+    "
+    " Case 3: Line "lnum" is neither the first nor last line.  
+    "         Lines "lnum" and "lnum-1" will have a trailing underscore
+    "         character.
+    "         Line "this_lnum" will have the same indentation as the preceding
+    "         line.
+    "
+    " No matter which case it is, the starting line of the statement must be
+    " found.  It will be assumed that multiline statements cannot have
+    " intermingled comments, statement labels, preprocessor directives or
+    " blank lines.
+    "
+    let lnum_is_continued = (previous_line =~ '_$')
+    if lnum > 1
+	let before_lnum = prevnonblank(lnum-1)
+	let before_previous_line = getline(before_lnum)
+    else
+	let before_lnum = 0
+	let before_previous_line = ""
+    endif
+
+    if before_previous_line !~ '_$'
+	" Variable "previous_line" contains the start of a statement.
+	"
+	let ind = indent(lnum)
+	if lnum_is_continued
+	    let ind += bShiftwidth
+	endif
+    elseif ! lnum_is_continued
+	" Line "lnum" contains the last line of a multiline statement.
+        " Need to find where this multiline statement begins
+	"
+	while before_lnum > 0
+	    let before_lnum -= 1
+	    if getline(before_lnum) !~ '_$'
+		let before_lnum += 1
+		break
+	    endif
+	endwhile
+	if before_lnum == 0
+	    let before_lnum = 1
+	endif
+	let previous_line = getline(before_lnum)
+	let ind = indent(before_lnum)
+    else
+	" Line "lnum" is not the first or last line of a multiline statement.
+	"
+	let ind = indent(lnum)
+    endif
 
     " Add
-    if previous_line =~? '^\s*\<\(begin\|\%(\%(private\|public\|friend\)\s\+\)\=\%(function\|sub\|property\)\|select\|case\|default\|if\|else\|elseif\|do\|for\|while\|enum\|with\)\>'
-	let ind = ind + shiftwidth()
+    if previous_line =~? '^\s*\<\(begin\|\%(\%(private\|public\|friend\)\s\+\)\=\%(function\|sub\|property\|enum\|type\)\|select\|case\|default\|if\|else\|elseif\|do\|for\|while\|with\)\>'
+	let ind = ind + bShiftwidth
     endif
 
     " Subtract
     if this_line =~? '^\s*\<end\>\s\+\<select\>'
 	if previous_line !~? '^\s*\<select\>'
-	    let ind = ind - 2 * shiftwidth()
+	    let ind = ind - 2 * bShiftwidth
 	else
 	    " this case is for an empty 'select' -- 'end select'
 	    " (w/o any case statements) like:
 	    "
 	    " select case readwrite
 	    " end select
-	    let ind = ind - shiftwidth()
+	    let ind = ind - bShiftwidth
 	endif
     elseif this_line =~? '^\s*\<\(end\|else\|elseif\|until\|loop\|next\|wend\)\>'
-	let ind = ind - shiftwidth()
+	let ind = ind - bShiftwidth
     elseif this_line =~? '^\s*\<\(case\|default\)\>'
 	if previous_line !~? '^\s*\<select\>'
-	    let ind = ind - shiftwidth()
+	    let ind = ind - bShiftwidth
 	endif
     endif
 
     return ind
-endfun
+endfunction
 
 " vim:sw=4
diff --git a/runtime/indent/vue.vim b/runtime/indent/vue.vim
index 7ff623b3d1..f6fe350a8f 100644
--- a/runtime/indent/vue.vim
+++ b/runtime/indent/vue.vim
@@ -1,12 +1,14 @@
 " Vim indent file placeholder
 " Language:	Vue
 " Maintainer:	None, please volunteer if you have a real Vue indent script
+" Last Change:	2022 Dec 24
 
 " Only load this indent file when no other was loaded.
 if exists("b:did_indent")
    finish
 endif
-let b:did_indent = 1
+" don't set b:did_indent, otherwise html indenting won't be activated
+" let b:did_indent = 1
 
 " Html comes closest
 runtime! indent/html.vim