maint: Clean up m-files to follow Octave coding conventions. Try to trim long lines to < 80 chars. Use '##' for single line comments. Use '(...)' around tests for if/elseif/switch/while. Abut cell indexing operator '{' next to variable. Abut array indexing operator '(' next to variable. Use space between negation operator '!' and following expression. Use two newlines between endfunction and start of %!test or %!demo code. Remove unnecessary parens grouping between short-circuit operators. Remove stray extra spaces (typos) between variables and assignment operators. Remove stray extra spaces from ends of lines.

--- a/scripts/statistics/base/table.m
+++ b/scripts/statistics/base/table.m
@@ -35,7 +35,7 @@
   endif
 
   if (nargin == 1)
-    if (!isnumeric (x) || !isvector (x))
+    if (! isnumeric (x) || ! isvector (x))
       error ("table: X must be a numeric vector");
     endif
     v = unique (x);
@@ -61,7 +61,7 @@
 endfunction
 
 
-%% Test input validation
+## Test input validation
 %!error table ()
 %!error table (1, 2, 3)
 %!error table (ones (2))