Fixed #644: Use more sensible tikz context

autoload/vimtex/env.vim

@@ -119,7 +119,7 @@ endfunction
 
 function! vimtex#env#is_inside(env) " {{{1
   return searchpair('\\begin\s*{' . a:env . '\*\?}', '',
-        \ '\\end\s*{' . a:env . '\*\?}', 'bnWm')
+        \ '\\end\s*{' . a:env . '\*\?}', 'bnW')
 endfunction
 
 " }}}1

indent/tex.vim

@@ -137,7 +137,8 @@ let s:re_delims = vimtex#delim#get_delim_regexes()
 
 " }}}1
 function! s:indent_tikz(lnum, prev) " {{{1
-  if vimtex#env#is_inside('tikzpicture')
+  let l:env_lnum = vimtex#env#is_inside('tikzpicture')
+  if l:env_lnum > 0 && l:env_lnum < a:lnum
     let l:prev_starts = a:prev =~# s:tikz_commands
     let l:prev_stops  = a:prev =~# ';\s*$'
 
@@ -148,7 +149,7 @@ function! s:indent_tikz(lnum, prev) " {{{1
 
     " Decrease indent on tikz command end, i.e. on semicolon
     if ! l:prev_starts && l:prev_stops
-      let l:context = join(getline(max([1,a:lnum-4]), a:lnum-1), '')
+      let l:context = join(getline(l:env_lnum, a:lnum-1), '')
       return -&sw*(l:context =~# s:tikz_commands)
     endif
   endif

test/vader/indentation.vader

@@ -130,6 +130,15 @@ Given tex (Indent: tikz):
     \draw [solid] let \p{O} = (outerContactHead)
       in (outerContactHead) -- (\x{O},-2.5)
         node [yshift=-.25cm] {(ii)};
+
+  \begin{axis}
+    \addplot
+      table[row sep=crcr]{%
+        0       0\\
+        1       1\\
+        2       2\\
+      };
+    \end{axis}
        \end{tikzpicture}
 
 Do (Indent):
@@ -156,6 +165,15 @@ Expect tex (Verify):
     \draw [solid] let \p{O} = (outerContactHead)
       in (outerContactHead) -- (\x{O},-2.5)
       node [yshift=-.25cm] {(ii)};
+
+    \begin{axis}
+      \addplot
+        table[row sep=crcr]{%
+          0       0\\
+          1       1\\
+          2       2\\
+        };
+    \end{axis}
   \end{tikzpicture}
 
 Given tex (Indent: verbatims):