so setting scroll-step to 1 doesn't defeat scroll-conservatively.
Set amount_to_scroll to max of dx and scroll_step so that
scroll-conservatively doesn't defeat scroll-step>1.
(syms_of_xdisp): Add a hint in scroll-step's docstring to use
scroll-conservatively for line-at-a-time scrolling.
rather than `prepend' and add an interesting comment.
(tex-math-face, tex-font-lock-syntactic-face-function):
New face and function to use it.
(tex-define-common-keys, tex-mode-map): Use menu-item rather
than `menu-enable' symbol property.
(tex-mode-map): Bind {, (, [ and $ to skeleton-pair-insert-maybe.
(tex-mode): Add some latex-mode commands for auto-selection.
Use tex-font-lock-syntactic-face-function.
(tex-insert-quote): Simplify.
(tex-shell): New mode.
(tex-start-shell): Use it.
(tex-shell-proc, tex-shell-buf): New functions.
(tex-send-command): Use it.
(tex-main-file): Fix the meaning of the new arg REALFILE.
(tex-send-tex-command): New function split from `tex-start-tex'.
Set compilation-last-buffer and compilation-parsing-end.
New variables.
(init_xdisp): Initialize them.
(pos_visible_p): Add parameter EXACT_MODE_LINE_HEIGHTS_P. Compute
and use exact mode line heights if it is set.
(gud-symbol, gud-val): New functions.
(gud-find-file): Copy gud-minor-mode to the new buffer.
(gud-menu-map): Include entries for commands that are not always
available, using :enable to (de)activate them.
(gud-minor-mode-map): New map. Add it to minor-mode-map-alist.
(gud-mode-map): New map.
(gud-gdb-find-file, gud-sdb-find-file, gud-dbx-find-file)
(gud-xdb-find-file, gud-perldb-find-file, gud-pdb-find-file):
Don't set up gud's menu (it's done by the minor-mode).
(gud-minibuffer-local-map): New.
Replace gdb-minibuffer-local-map and pdb-minibuffer-local-map.
(gud-query-cmdline): New function.
(gdb, sdb, dbx, xdb, perldb, pdb, jdb): Use it. Set gud-minor-mode.
(gud-mode): Use define-derived-mode.
Don't set up gud's menu (it's done by the minor-mode).
(gud-chop-words): Remove.
(gud-common-init): Use split-string instead.
(gud-new-keymap, gud-make-debug-menu): Eradicate.
Make it into a simple syntax-table, shared among all submodes.
(sh-heredoc-face): Re-introduce.
(sh-font-lock-syntactic-face-function): New function.
(sh-mode): Use it. Also use define-derived-mode.
Remove old bogus setting of indent-region-function.
(sh-set-shell): Don't set the syntax-table any more.
(sh-mode-syntax-table) <defun>: Remove.
