feat: plugin code and updates

indent/shellspec.vim

@@ -0,0 +1,46 @@
+" Indentation for ShellSpec DSL
+if exists("b:did_indent")
+  finish
+endif
+let b:did_indent = 1
+
+setlocal indentexpr=GetShellSpecIndent()
+setlocal indentkeys=!^F,o,O,e,=End
+
+function! GetShellSpecIndent()
+  let line = getline(v:lnum)
+  let prevline = getline(v:lnum - 1)
+
+  " Don't change indentation for comments
+  if line =~ '^\s*#'
+    return -1
+  endif
+
+  " End decreases indent
+  if line =~ '^\s*End\s*$'
+    return indent(v:lnum - 1) - &shiftwidth
+  endif
+
+  " After block start keywords, increase indent
+  if prevline =~ '^\s*\(Describe\|Context\|ExampleGroup\|It\|Specify\|Example\)'
+    return indent(v:lnum - 1) + &shiftwidth
+  endif
+
+  " After prefixed block keywords
+  if prevline =~ '^\s*\([xf]\)\(Describe\|Context\|ExampleGroup\|It\|Specify\|Example\)'
+    return indent(v:lnum - 1) + &shiftwidth
+  endif
+
+  " After Data blocks
+  if prevline =~ '^\s*Data\s*$'
+    return indent(v:lnum - 1) + &shiftwidth
+  endif
+
+  " After Parameters blocks
+  if prevline =~ '^\s*Parameters'
+    return indent(v:lnum - 1) + &shiftwidth
+  endif
+
+  " Keep same indent for most lines
+  return indent(v:lnum - 1)
+endfunction