patch for fortran modes

I recently needed to edit a fortran file and had problems with the TAB
indent key. The problem is caused by having previously used 'text-mode',
which causes the "indent_line" bind to get lost:

public define text_mode()
{
   ...
   local_setkey ("text_indent_relative", "\t");
   %set_buffer_hook ("indent_hook", "text_indent_relative");
   ...
}

For extra safety (and parallel to some other modes) I've added the required
key binding explicitly to fortran.sl and f90.sl

/mark

--- fortran.sl.orig     2006-08-28 12:09:09.000000000 +0200
+++ fortran.sl  2006-09-28 10:09:08.000000000 +0200
@@ -336,6 +336,7 @@
 $1 = "Fortran";
 !if (keymap_p ($1)) make_keymap ($1);

+definekey ("indent_line",              "\t",   $1);
 definekey ("fortran_comment",          "\e;",  $1);
 definekey ("fortran_uncomment",                "\e:",  $1);
 definekey ("fortran_continue_newline", "\e\r", $1);
--- f90.sl.orig 2006-08-28 12:09:09.000000000 +0200
+++ f90.sl      2006-09-28 10:29:44.000000000 +0200
@@ -27,6 +27,7 @@
    variable cs = CASE_SEARCH;
    variable ch;

+% FIX: replace USER_BLOCK0 with bol_skip_white()
    % goto beginning of line and skip past tabs and spaces
    USER_BLOCK0
      {
@@ -43,11 +44,13 @@
        bol_skip_white();
        if (eolp() or looking_at("!") or looking_at("&") or looking_at("#")
)
          continue;
+% FIX: replace USER_BLOCK0 with bol_skip_white()
        X_USER_BLOCK0 ();
        goal = what_column ();

 %      if (goal == 1) continue;

+% FIX: replace with skip_chars ("0-9 \t");
        skip_chars (" \t1234567890");
        if (looking_at("do ") or looking_at("else")
            or looking_at("function")
@@ -88,6 +91,7 @@
    % now check current line
    pop_spot ();
    push_spot ();
+% FIX: replace USER_BLOCK0 with bol_skip_white()
    X_USER_BLOCK0 ();

    if (looking_at("end") )
@@ -123,12 +127,13 @@
    switch (ch)
      {
        case F90_Continue_Char :        % continuation character
-       bol (); trim ();
+       bol_trim ();
+% FIX: insert content of USER_BLOCK1 and simplify
        X_USER_BLOCK1 ();
      }
      {
        not (bolp()) or eolp ():        % general case
-       bol (); trim ();
+       bol_trim ();
        goal--;
        insert_spaces (goal);
      }
@@ -187,14 +192,14 @@

    if (cont1)
      {
-       insert( " " );
+       insert_single_space();
        insert(F90_Continue_Char);
      }
    newline ();
    if ( cont )
      {
        insert(F90_Continue_Char);
-       insert( " " );
+       insert_single_space();
      }
    insert_single_space ();
    free_f90_indent ();
@@ -284,19 +289,19 @@

        if (what_column () >= 6)
          {
-            bol (); trim ();
+            bol_trim ();
             insert_single_space ();
          }
        X_USER_BLOCK1 ();
      }
      {
        case F90_Continue_Char :        % continuation character
-       bol (); trim (); insert ("     ");
+       bol_trim (); insert ("     ");
        X_USER_BLOCK1 ();
      }
      {
        not (bolp()) or eolp ():        % general case
-       bol (); trim ();
+       bol_trim ();
        goal--;
        insert_spaces (goal);
      }
@@ -565,6 +570,7 @@
 $1 = "F90";
 !if (keymap_p ($1)) make_keymap ($1);

+definekey ("indent_line",              "\t",   $1);
 definekey ("f90_comment",              "\e;",  $1);
 definekey ("f90_uncomment",            "\e:",  $1);
 definekey ("f90_continue_newline",     "\e\r", $1);



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