In `f90-mode', using `narrow-do-defun' will keep the buffer up until the
end of the module.
The cause seems to be that `f90-end-of-subprogram', which is called by
`end-of-defun', considers the whole `SUBROUTINE' line to be part of the
outer scope.
Within `narrow-to-defun', the function `end-of-defun' is called when the
point is at the beginning of the `SUBROUTINE' line, which moves `point'
to the end of the scope where the subroutine is declared instead of to
the end of the subroutine.
To reproduce in `emacs -Q':
1. Create a file `test.f90' with the following contents:
________________________________________
01: module main
02: contains
03:
04: subroutine parentscope()
05:
06: contains
07:
08: subroutine helloworld ()
09: print *, "hello world" !<- narrow-to-defun on this line
10: end subroutine helloworld
11:
12: subroutine byeworld ()
13: print *, "bye world"
14: end subroutine byeworld
15:
16: end subroutine parentscope
17:
18: end module main
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2. On the line `print *, "hello world"' perform `C-x n d' or `M-x
narrow-to-defun'. We expect narrowing to
________________________________________
08: subroutine helloworld ()
09: print *, "hello world"
10: end subroutine helloworld
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
but instead get narrowing to
________________________________________
08: subroutine helloworld ()
09: print *, "hello world"
10: end subroutine helloworld
11:
12: subroutine byeworld ()
13: print *, "bye world"
14: end subroutine byeworld
15:
16: end subroutine parentscope
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
--------------------------------------------------
In GNU Emacs 26.3 (build 1, x86_64-suse-linux-gnu, GTK+ Version 3.22.30)
Windowing system distributor 'The X.Org Foundation', version 11.0.12003000
System Description: openSUSE Leap 15.1
Recent messages:
For information about GNU Emacs and the GNU system, type C-h C-a.
Configured using:
'configure --disable-build-details --with-pop --without-hesiod
--with-gameuser=:games --with-kerberos --with-kerberos5
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'CFLAGS=-fmessage-length=0 -grecord-gcc-switches -O2 -Wall
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Configured features:
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ACL LIBSELINUX GNUTLS LIBXML2 FREETYPE M17N_FLT LIBOTF XFT ZLIB
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LIBSYSTEMD
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value of $LC_MONETARY:
value of $LC_NUMERIC: POSIX
value of $LANG: en_US.UTF-8
value of $XMODIFIERS: @im=local
locale-coding-system: utf-8-unix
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mouse-wheel-mode: t
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Load-path shadows:
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syntax facemenu font-core term/tty-colors frame cl-generic cham georgian
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