@c This is part of the Emacs manual.
-@c Copyright (C) 1985, 86, 87, 93, 94, 95, 1997 Free Software Foundation, Inc.
+@c Copyright (C) 1985,86,87,93,94,95,97,1999 Free Software Foundation, Inc.
@c See file emacs.texi for copying conditions.
@node Programs, Building, Text, Top
@chapter Editing Programs
@cindex Makefile mode
@cindex Tcl mode
@cindex CPerl mode
+@cindex DSSSL mode
+@cindex Octave mode
+@cindex Metafont mode
+@cindex Modula2 mode
+@cindex Prolog mode
+@cindex Simula mode
+@cindex VHDL mode
+@cindex M4 mode
+@cindex Shell-script mode
Emacs also has major modes for the programming languages Lisp, Scheme
-(a variant of Lisp), Awk, C, C++, Fortran, Icon, Java, Objective-C,
-Pascal, Perl, Pike, CORBA IDL, and Tcl. There is also a major mode for
-makefiles, called Makefile mode. An second alternative mode for Perl is
-called CPerl mode.
+(a variant of Lisp) and the Scheme-based DSSSL expression language, Awk,
+C, C++, Fortran (free and fixed format), Icon, Java, Metafont (@TeX{}'s
++companion for font creation), Modula2, Objective-C, Octave, Pascal,
+Perl, Pike, Prolog, Simula, VHDL, CORBA IDL, and Tcl. There is also a
+major mode for makefiles, called Makefile mode. An alternative mode for
+Perl is called CPerl mode.
Ideally, a major mode should be implemented for each programming
language that you might want to edit with Emacs; but often the mode for
You should not match more characters with @var{tagregexp} than that
needed to recognize what you want to tag. If the match is such that
-more characters than needed are unavoidably matched by @var{tagregexp},
-you may find useful to add a @var{nameregexp}, in order to narrow the tag
-scope. You can find some examples below.
+more characters than needed are unavoidably matched by @var{tagregexp}
+(as will usually be the case), you should add a @var{nameregexp}, to
+pick out just the tag. This will enable Emacs to find tags more
+accurately and to do completion on tag names more reliably. You can
+find some examples below.
+
+ The option @samp{--case-folded-regexp} (or @samp{-c}) si like
+@samp{--regex}, except that the regular expression provided will be
+matched with case folded, i.e. case-insensitively, which is appropriate
+for various programming languages.
The @samp{-R} option deletes all the regexps defined with
@samp{--regex} options. It applies to the file names following it, as
Use @kbd{M-x fortran-mode} to switch to this major mode. This command
runs the hook @code{fortran-mode-hook} (@pxref{Hooks}).
+@cindex Fortran77
+@cindex Fortran90
+@findex f90-mode
+@findex fortran-mode
+Note that Fortan mode described here (obtained with the
+@code{fortran-mode} command) is for editing the old Fortran77
+idiosyncratic `fixed format' source form. For editing the modern
+Fortran90 `free format' source form (which is supported by the GNU
+Fortran compiler) use @code{f90-mode}.
+
+By default @code{fortran-mode} is invoked on files with extension
+@samp{.f}, @samp{.F} or @samp{.for} and @code{f90-mode} is invoked for
+the extension @samp{.f90}.
+
@menu
* Motion: Fortran Motion. Moving point by statements or subprograms.
* Indent: Fortran Indent. Indentation commands for Fortran.
@kindex C-M-h @r{(Fortran mode)}
@kindex C-c C-p @r{(Fortran mode)}
@kindex C-c C-n @r{(Fortran mode)}
+@kindex C-x n d @r{(Fortran mode)}
@findex beginning-of-fortran-subprogram
@findex end-of-fortran-subprogram
@findex mark-fortran-subprogram
@findex fortran-previous-statement
@findex fortran-next-statement
+@findex fortran-narrow-to-subprogram
@table @kbd
@item C-M-a
@item C-c C-p
Move to beginning of current or previous statement
(@code{fortran-previous-statement}).
+@item C-x n d
+Narrow to the current subprogram, i.e.@: only it is visible
+(@code{fortran-narrow-to-subprogram}).
+Undo the effect of this with @kbd{C-x n w} (@code{widen}).
@end table
@node Fortran Indent
less the inverse of @code{fortran-split-line}. It joins the current
line to the previous line in a suitable way for Fortran code.
+@kindex C-c C-d @r{(Fortran mode)}
+@findex fortran-join-line
+ The key sequence @kbd{C-c C-d} runs @code{fortran-join-line}, which
+joins a continuation line back to the previous line, roughly as the
+inverse of @code{fortran-split-line}. The point must be on a
+continuation line when this command is invoked.
+
@node ForIndent Cont
@subsubsection Continuation Lines
@cindex Fortran continuation lines
Otherwise, the variable @code{fortran-column-ruler-tab} is displayed.
By changing these variables, you can change the column ruler display.
-@kindex C-c C-w @r{(Fortran mode)}
+@kindex C-u C-c C-w @r{(Fortran mode)}
@findex fortran-window-create
- For even more help, use @kbd{C-c C-w} (@code{fortran-window-create}), a
+ For even more help, use @kbd{M-x fortran-window-create}), a
command which splits the current window horizontally, making a window 72
columns wide. By editing in this window you can immediately see when you
make a line too wide to be correct Fortran.
+@kindex C-c C-w @r{(Fortran mode)}
+@findex fortran-window-create-momentarily
+Also, @kbd{C-c C-w} (@code{fortran-window-create-momentarily}) can be
+used temporarily to split the current window horizontally, making a
+window 72 columns wide to check column widths rather than to edit in
+this mode. The normal width is restored when you type a space.
+
@node Fortran Abbrev
@subsection Fortran Keyword Abbrevs
@section Asm Mode
@cindex Asm mode
+@cindex Assembler mode
Asm mode is a major mode for editing files of assembler code. It
defines these commands:
projects / emacs.git / commitdiff