Hold doesn't work as expected in 3.0.3

Alexander Mamonov mamonov at gmail.com
Tue Oct 21 11:23:37 CDT 2008 

Bug report for Octave 3.0.3 configured for i486-pc-linux-gnu

Description:
-----------

Consider the following piece of code:

figure(1); clf;
hold on;
title('ABC');
plot([1,2],[1,2],'b-');
plot([1,2],[2,1],'r-');

Expected behavior is that Octave would turn hold on for the figure,
and each successive plot would not overwrite the previous one.
This is indeed the behavior in 3.0.1 and 3.0.2. But in 3.0.3 hold
is not turned on for some reason, and so only the last (red) line is displayed.

Changing the order of commands to

figure(1); clf;
title('ABC');
hold on;
plot([1,2],[1,2],'b-');
plot([1,2],[2,1],'r-');

fixes the problem, however it requires making changes to numerous scripts
that used to work OK with the previous versions of Octave (and Matlab).

Repeat-By:
---------

figure(1); clf;
hold on;
title('ABC');
plot([1,2],[1,2],'b-');
plot([1,2],[2,1],'r-');

Fix:
---

No fix proposed.

Configuration (please do not edit this section):
-----------------------------------------------

uname output:     Linux ubuntu 2.6.27-7-generic #1 SMP Fri Oct 17
22:24:21 UTC 2008 i686 GNU/Linux
configure opts:   '--build=i486-linux-gnu' '--prefix=/usr'
'--datadir=/usr/share' '--libdir=/usr/lib' '--libexecdir=/usr/lib'
'--infodir=/usr/share/info' '--mandir=/usr/share/man'
'--with-blas=-lblas-3gf' '--with-lapack=-llapackgf-3' '--with-hdf5'
'--with-fftw' '--enable-shared' '--enable-rpath' '--disable-static'
'build_alias=i486-linux-gnu' 'CC=gcc' 'CFLAGS=-g -O2' 'LDFLAGS='
'CPPFLAGS=' 'CXX=g++' 'CXXFLAGS=-g -O2' 'F77=gfortran' 'FFLAGS=-g -O2'
Fortran compiler: gfortran
FFLAGS:           -O2 -g
F2C:              @F2C@
F2CFLAGS:         @F2CFLAGS@
FLIBS:            -L/usr/lib/gcc/i486-linux-gnu/4.3.2
-L/usr/lib/gcc/i486-linux-gnu/4.3.2/../../../../lib -L/lib/../lib
-L/usr/lib/../lib -L/usr/lib/gcc/i486-linux-gnu/4.3.2/../../.. -lhdf5
-lz -lgfortranbegin -lgfortran -lm
CPPFLAGS:
INCFLAGS:         -I. -I. -I./liboctave -I./src -I./libcruft/misc
C compiler:       gcc, version 4.3.2 (Debian 4.3.2-1)
CFLAGS:           -O2 -g
CPICFLAG:         -fPIC
C++ compiler:     g++, version 4.3.2
CXXFLAGS:         -O2 -g
CXXPICFLAG:       -fPIC
LD_CXX:           g++
LDFLAGS:
LIBFLAGS:         -L.
RLD_FLAG:         -Wl,-rpath -Wl,/usr/lib/octave-3.0.3
BLAS_LIBS:        -llapackgf-3 -lblas-3gf
FFTW_LIBS:        -lfftw3
LIBS:             -lreadline  -lncurses -ldl -lhdf5 -lz -lm
LEXLIB:
LIBGLOB:
SED:              /bin/sed
DEFS:

  -DPACKAGE_NAME="" -DPACKAGE_TARNAME="" -DPACKAGE_VERSION=""
  -DPACKAGE_STRING="" -DPACKAGE_BUGREPORT="" -DOCTAVE_SOURCE=1
  -D_GNU_SOURCE=1 -DSTDC_HEADERS=1 -DHAVE_SYS_TYPES_H=1 -DHAVE_SYS_STAT_H=1
  -DHAVE_STDLIB_H=1 -DHAVE_STRING_H=1 -DHAVE_MEMORY_H=1 -DHAVE_STRINGS_H=1
  -DHAVE_INTTYPES_H=1 -DHAVE_STDINT_H=1 -DHAVE_UNISTD_H=1 -DSEPCHAR=':'
  -DSEPCHAR_STR=":" -D__NO_MATH_INLINES=1 -DCXX_NEW_FRIEND_TEMPLATE_DECL=1
  -DCXX_ISO_COMPLIANT_LIBRARY=1 -DCXX_ABI=gnu_v3 -DHAVE_LIBM=1
  -DHAVE_QHULL=1 -DHAVE_PCRE=1 -DHAVE_REGEXEC=1 -DHAVE_REGEX=1
  -DHAVE_ZLIB_H=1 -DHAVE_ZLIB=1 -DHAVE_HDF5_H=1 -DHAVE_HDF5=1
  -DHAVE_H5GGET_NUM_OBJS=1 -DHAVE_FFTW3=1 -DHAVE_GLPK_H=1 -DHAVE_GLPK=1
  -DHAVE_CURL_CURL_H=1 -DHAVE_CURL=1 -DHAVE_IEEE754_DATA_FORMAT=1
  -DF77_FUNC(name,NAME)=name ## _ -DF77_FUNC_(name,NAME)=name ## _
  -DHAVE_BLAS=1 -DHAVE_SUITESPARSE_UMFPACK_H=1 -DHAVE_UMFPACK=1
  -DUMFPACK_SEPARATE_SPLIT=1 -DHAVE_SUITESPARSE_COLAMD_H=1
  -DHAVE_COLAMD=1 -DHAVE_SUITESPARSE_CCOLAMD_H=1 -DHAVE_CCOLAMD=1
  -DHAVE_SUITESPARSE_CHOLMOD_H=1 -DHAVE_CHOLMOD=1 -DHAVE_SUITESPARSE_CS_H=1
  -DHAVE_CXSPARSE=1 -DHAVE_GETHOSTNAME=1 -DHAVE_GETPWNAM=1 -DHAVE_DEV_T=1
  -DHAVE_INO_T=1 -DHAVE_NLINK_T=1 -DHAVE_NLINK_T=1 -DHAVE_LONG_LONG_INT=1
  -DHAVE_UNSIGNED_LONG_LONG_INT=1 -DHAVE_SIGSET_T=1 -DHAVE_SIG_ATOMIC_T=1
  -DSIZEOF_SHORT=2 -DSIZEOF_INT=4 -DSIZEOF_LONG=4 -DSIZEOF_LONG_LONG=8
  -DHAVE_ALLOCA_H=1 -DHAVE_ALLOCA=1 -DNPOS=std::string::npos
  -DHAVE_PLACEMENT_DELETE=1 -DHAVE_DYNAMIC_AUTO_ARRAYS=1 -DSTDC_HEADERS=1
  -DHAVE_DIRENT_H=1 -DTIME_WITH_SYS_TIME=1 -DHAVE_SYS_WAIT_H=1
  -DHAVE_ASSERT_H=1 -DHAVE_CURSES_H=1 -DHAVE_DLFCN_H=1 -DHAVE_FCNTL_H=1
  -DHAVE_FLOAT_H=1 -DHAVE_GRP_H=1 -DHAVE_INTTYPES_H=1 -DHAVE_LIMITS_H=1
  -DHAVE_LOCALE_H=1 -DHAVE_MEMORY_H=1 -DHAVE_NCURSES_H=1 -DHAVE_POLL_H=1
  -DHAVE_PWD_H=1 -DHAVE_STDINT_H=1 -DHAVE_STDLIB_H=1 -DHAVE_STRING_H=1
  -DHAVE_SYS_IOCTL_H=1 -DHAVE_SYS_PARAM_H=1 -DHAVE_SYS_POLL_H=1
  -DHAVE_SYS_RESOURCE_H=1 -DHAVE_SYS_SELECT_H=1 -DHAVE_SYS_STAT_H=1
  -DHAVE_SYS_TIME_H=1 -DHAVE_SYS_TIMES_H=1 -DHAVE_SYS_TYPES_H=1
  -DHAVE_SYS_UTSNAME_H=1 -DHAVE_TERMCAP_H=1 -DHAVE_UNISTD_H=1
  -DHAVE_UTIME_H=1 -DHAVE_SSTREAM=1 -DHAVE_TERMIO_H=1 -DHAVE_SGTTY_H=1
  -DHAVE_GLOB_H=1 -DHAVE_FNMATCH_H=1 -DHAVE_FNMATCH=1 -DHAVE_GLOB=1
  -DHAVE_ATEXIT=1 -DHAVE_BASENAME=1 -DHAVE_BCOPY=1 -DHAVE_BZERO=1
  -DHAVE_CANONICALIZE_FILE_NAME=1 -DHAVE_CHMOD=1 -DHAVE_DUP2=1
  -DHAVE_ENDGRENT=1 -DHAVE_ENDPWENT=1 -DHAVE_EXECVP=1 -DHAVE_FCNTL=1
  -DHAVE_FORK=1 -DHAVE_GETCWD=1 -DHAVE_GETEGID=1 -DHAVE_GETEUID=1
  -DHAVE_GETGID=1 -DHAVE_GETGRENT=1 -DHAVE_GETGRGID=1 -DHAVE_GETGRNAM=1
  -DHAVE_GETPGRP=1 -DHAVE_GETPID=1 -DHAVE_GETPPID=1 -DHAVE_GETPWENT=1
  -DHAVE_GETPWUID=1 -DHAVE_GETTIMEOFDAY=1 -DHAVE_GETUID=1 -DHAVE_GETWD=1
  -DHAVE_KILL=1 -DHAVE_LGAMMA=1 -DHAVE_LINK=1 -DHAVE_LOCALTIME_R=1
  -DHAVE_LSTAT=1 -DHAVE_MEMMOVE=1 -DHAVE_MKDIR=1 -DHAVE_MKFIFO=1
  -DHAVE_MKSTEMP=1 -DHAVE_ON_EXIT=1 -DHAVE_PIPE=1 -DHAVE_POLL=1
  -DHAVE_PUTENV=1 -DHAVE_RAISE=1 -DHAVE_READLINK=1 -DHAVE_REALPATH=1
  -DHAVE_RENAME=1 -DHAVE_RINDEX=1 -DHAVE_RMDIR=1 -DHAVE_ROUND=1
  -DHAVE_SELECT=1 -DHAVE_SETGRENT=1 -DHAVE_SETLOCALE=1
  -DHAVE_SETPWENT=1 -DHAVE_SETVBUF=1 -DHAVE_SIGACTION=1
  -DHAVE_SIGLONGJMP=1 -DHAVE_SIGPENDING=1 -DHAVE_SIGPROCMASK=1
  -DHAVE_SIGSUSPEND=1 -DHAVE_SNPRINTF=1 -DHAVE_STAT=1 -DHAVE_STRCASECMP=1
  -DHAVE_STRDUP=1 -DHAVE_STRERROR=1 -DHAVE_STRNCASECMP=1 -DHAVE_STRPTIME=1
  -DHAVE_STRSIGNAL=1 -DHAVE_SYMLINK=1 -DHAVE_TEMPNAM=1 -DHAVE_TGAMMA=1
  -DHAVE_UMASK=1 -DHAVE_UNAME=1 -DHAVE_UNLINK=1 -DHAVE_USLEEP=1
  -DHAVE_UTIME=1 -DHAVE_VFPRINTF=1 -DHAVE_VSPRINTF=1 -DHAVE_VSNPRINTF=1
  -DHAVE_WAITPID=1 -DHAVE_STRFTIME=1 -DHAVE_LIBDL=1 -DHAVE_DLOPEN=1
  -DHAVE_DLSYM=1 -DHAVE_DLERROR=1 -DHAVE_DLCLOSE=1 -DHAVE_DLOPEN_API=1
  -DENABLE_DYNAMIC_LINKING=1 -DHAVE_TIMEVAL=1 -DHAVE_FINITE=1
  -DHAVE_ISNAN=1 -DHAVE_ISINF=1 -DHAVE_COPYSIGN=1 -DHAVE_DECL_SIGNBIT=1
  -DHAVE_ACOSH=1 -DHAVE_ASINH=1 -DHAVE_ATANH=1 -DHAVE_ERF=1 -DHAVE_ERFC=1
  -DHAVE_EXP2=1 -DHAVE_LOG2=1 -DHAVE_STRUCT_STAT_ST_BLKSIZE=1
  -DHAVE_STRUCT_STAT_ST_BLOCKS=1 -DHAVE_STRUCT_STAT_ST_RDEV=1
  -DHAVE_STRUCT_TM_TM_ZONE=1 -DHAVE_TM_ZONE=1 -DUSE_READLINE=1
  -DEXCEPTION_IN_MATH=1 -DRETSIGTYPE=void -DHAVE_DECL_SYS_SIGLIST=1
  -DHAVE_POSIX_SIGNALS=1 -DRETSIGTYPE_IS_VOID=1 -DHAVE_GETRUSAGE=1
  -DHAVE_TIMES=1 -DYYTEXT_POINTER=1 -DGNUPLOT_BINARY="gnuplot"

User-preferences (please do not edit this section):
--------------------------------------------------

  EDITOR = emacs
  EXEC_PATH = /usr/lib/octave/3.0.3/site/exec/i486-pc-linux-gnu:/usr/lib/octave/api-v32/site/exec/i486-pc-linux-gnu:/usr/lib/octave/site/exec/i486-pc-linux-gnu:/usr/lib/octave/3.0.3/exec/i486-pc-linux-gnu:/usr/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
  IMAGE_PATH = .:/usr/share/octave/3.0.3/imagelib
  PAGER = pager
  PS1 = \s:\#>
  PS2 = >
  PS4 = +
  beep_on_error = 0
  completion_append_char =
  crash_dumps_octave_core = 1
  echo_executing_commands = 0
  fixed_point_format = 0
  gnuplot_binary = gnuplot
  gnuplot_command_end =

  gnuplot_command_plot = pl
  gnuplot_command_replot = rep
  gnuplot_command_splot = sp
  gnuplot_command_title = t
  gnuplot_command_using = u
  gnuplot_command_with = w
  history_file = /home/amamonov/.octave_hist
  history_size = 1024
  ignore_function_time_stamp = system
  info_file = /usr/share/info/octave3.0.info
  info_program = info
  makeinfo_program = makeinfo
  max_recursion_depth = 256
  output_max_field_width = 5
  output_precision = 5
  page_output_immediately = 0
  page_screen_output = 1
  print_answer_id_name = 1
  print_empty_dimensions = 1
  save_precision = 16
  saving_history = 1
  sighup_dumps_octave_core = 1
  sigterm_dumps_octave_core = 1
  silent_functions = 0
  split_long_rows = 1
  string_fill_char =
  struct_levels_to_print = 2
  suppress_verbose_help_message = 0
Bug report for Octave 3.0.3 configured for i486-pc-linux-gnu

Description:
-----------

Consider the following piece fo code:

figure(1); clf;
hold on;
title('ABC');
plot([1,2],[1,2],'b-');
plot([1,2],[2,1],'r-');

Expected behavior is that Octave would turn hold on for the figure,
and each successive plot would not overwrite the previous one.
This is indeed the behavior in 3.0.1 and 3.0.2. But in 3.0.3 hold
is not turned on for some reason, and so only the last (red) line is displayed.

Changing the order of commands to

figure(1); clf;
title('ABC');
hold on;
plot([1,2],[1,2],'b-');
plot([1,2],[2,1],'r-');

fixes the problem, however it requires making changes to numerous scripts
that used to work OK with the previous versions of Octave (and Matlab).

Repeat-By:
---------

figure(1); clf;
hold on;
title('ABC');
plot([1,2],[1,2],'b-');
plot([1,2],[2,1],'r-');

Fix:
---

No fix proposed.

Configuration (please do not edit this section):
-----------------------------------------------

uname output:     Linux ubuntu 2.6.27-7-generic #1 SMP Fri Oct 17
22:24:21 UTC 2008 i686 GNU/Linux
configure opts:   '--build=i486-linux-gnu' '--prefix=/usr'
'--datadir=/usr/share' '--libdir=/usr/lib' '--libexecdir=/usr/lib'
'--infodir=/usr/share/info' '--mandir=/usr/share/man'
'--with-blas=-lblas-3gf' '--with-lapack=-llapackgf-3' '--with-hdf5'
'--with-fftw' '--enable-shared' '--enable-rpath' '--disable-static'
'build_alias=i486-linux-gnu' 'CC=gcc' 'CFLAGS=-g -O2' 'LDFLAGS='
'CPPFLAGS=' 'CXX=g++' 'CXXFLAGS=-g -O2' 'F77=gfortran' 'FFLAGS=-g -O2'
Fortran compiler: gfortran
FFLAGS:           -O2 -g
F2C:              @F2C@
F2CFLAGS:         @F2CFLAGS@
FLIBS:            -L/usr/lib/gcc/i486-linux-gnu/4.3.2
-L/usr/lib/gcc/i486-linux-gnu/4.3.2/../../../../lib -L/lib/../lib
-L/usr/lib/../lib -L/usr/lib/gcc/i486-linux-gnu/4.3.2/../../.. -lhdf5
-lz -lgfortranbegin -lgfortran -lm
CPPFLAGS:
INCFLAGS:         -I. -I. -I./liboctave -I./src -I./libcruft/misc
C compiler:       gcc, version 4.3.2 (Debian 4.3.2-1)
CFLAGS:           -O2 -g
CPICFLAG:         -fPIC
C++ compiler:     g++, version 4.3.2
CXXFLAGS:         -O2 -g
CXXPICFLAG:       -fPIC
LD_CXX:           g++
LDFLAGS:
LIBFLAGS:         -L.
RLD_FLAG:         -Wl,-rpath -Wl,/usr/lib/octave-3.0.3
BLAS_LIBS:        -llapackgf-3 -lblas-3gf
FFTW_LIBS:        -lfftw3
LIBS:             -lreadline  -lncurses -ldl -lhdf5 -lz -lm
LEXLIB:
LIBGLOB:
SED:              /bin/sed
DEFS:

  -DPACKAGE_NAME="" -DPACKAGE_TARNAME="" -DPACKAGE_VERSION=""
  -DPACKAGE_STRING="" -DPACKAGE_BUGREPORT="" -DOCTAVE_SOURCE=1
  -D_GNU_SOURCE=1 -DSTDC_HEADERS=1 -DHAVE_SYS_TYPES_H=1 -DHAVE_SYS_STAT_H=1
  -DHAVE_STDLIB_H=1 -DHAVE_STRING_H=1 -DHAVE_MEMORY_H=1 -DHAVE_STRINGS_H=1
  -DHAVE_INTTYPES_H=1 -DHAVE_STDINT_H=1 -DHAVE_UNISTD_H=1 -DSEPCHAR=':'
  -DSEPCHAR_STR=":" -D__NO_MATH_INLINES=1 -DCXX_NEW_FRIEND_TEMPLATE_DECL=1
  -DCXX_ISO_COMPLIANT_LIBRARY=1 -DCXX_ABI=gnu_v3 -DHAVE_LIBM=1
  -DHAVE_QHULL=1 -DHAVE_PCRE=1 -DHAVE_REGEXEC=1 -DHAVE_REGEX=1
  -DHAVE_ZLIB_H=1 -DHAVE_ZLIB=1 -DHAVE_HDF5_H=1 -DHAVE_HDF5=1
  -DHAVE_H5GGET_NUM_OBJS=1 -DHAVE_FFTW3=1 -DHAVE_GLPK_H=1 -DHAVE_GLPK=1
  -DHAVE_CURL_CURL_H=1 -DHAVE_CURL=1 -DHAVE_IEEE754_DATA_FORMAT=1
  -DF77_FUNC(name,NAME)=name ## _ -DF77_FUNC_(name,NAME)=name ## _
  -DHAVE_BLAS=1 -DHAVE_SUITESPARSE_UMFPACK_H=1 -DHAVE_UMFPACK=1
  -DUMFPACK_SEPARATE_SPLIT=1 -DHAVE_SUITESPARSE_COLAMD_H=1
  -DHAVE_COLAMD=1 -DHAVE_SUITESPARSE_CCOLAMD_H=1 -DHAVE_CCOLAMD=1
  -DHAVE_SUITESPARSE_CHOLMOD_H=1 -DHAVE_CHOLMOD=1 -DHAVE_SUITESPARSE_CS_H=1
  -DHAVE_CXSPARSE=1 -DHAVE_GETHOSTNAME=1 -DHAVE_GETPWNAM=1 -DHAVE_DEV_T=1
  -DHAVE_INO_T=1 -DHAVE_NLINK_T=1 -DHAVE_NLINK_T=1 -DHAVE_LONG_LONG_INT=1
  -DHAVE_UNSIGNED_LONG_LONG_INT=1 -DHAVE_SIGSET_T=1 -DHAVE_SIG_ATOMIC_T=1
  -DSIZEOF_SHORT=2 -DSIZEOF_INT=4 -DSIZEOF_LONG=4 -DSIZEOF_LONG_LONG=8
  -DHAVE_ALLOCA_H=1 -DHAVE_ALLOCA=1 -DNPOS=std::string::npos
  -DHAVE_PLACEMENT_DELETE=1 -DHAVE_DYNAMIC_AUTO_ARRAYS=1 -DSTDC_HEADERS=1
  -DHAVE_DIRENT_H=1 -DTIME_WITH_SYS_TIME=1 -DHAVE_SYS_WAIT_H=1
  -DHAVE_ASSERT_H=1 -DHAVE_CURSES_H=1 -DHAVE_DLFCN_H=1 -DHAVE_FCNTL_H=1
  -DHAVE_FLOAT_H=1 -DHAVE_GRP_H=1 -DHAVE_INTTYPES_H=1 -DHAVE_LIMITS_H=1
  -DHAVE_LOCALE_H=1 -DHAVE_MEMORY_H=1 -DHAVE_NCURSES_H=1 -DHAVE_POLL_H=1
  -DHAVE_PWD_H=1 -DHAVE_STDINT_H=1 -DHAVE_STDLIB_H=1 -DHAVE_STRING_H=1
  -DHAVE_SYS_IOCTL_H=1 -DHAVE_SYS_PARAM_H=1 -DHAVE_SYS_POLL_H=1
  -DHAVE_SYS_RESOURCE_H=1 -DHAVE_SYS_SELECT_H=1 -DHAVE_SYS_STAT_H=1
  -DHAVE_SYS_TIME_H=1 -DHAVE_SYS_TIMES_H=1 -DHAVE_SYS_TYPES_H=1
  -DHAVE_SYS_UTSNAME_H=1 -DHAVE_TERMCAP_H=1 -DHAVE_UNISTD_H=1
  -DHAVE_UTIME_H=1 -DHAVE_SSTREAM=1 -DHAVE_TERMIO_H=1 -DHAVE_SGTTY_H=1
  -DHAVE_GLOB_H=1 -DHAVE_FNMATCH_H=1 -DHAVE_FNMATCH=1 -DHAVE_GLOB=1
  -DHAVE_ATEXIT=1 -DHAVE_BASENAME=1 -DHAVE_BCOPY=1 -DHAVE_BZERO=1
  -DHAVE_CANONICALIZE_FILE_NAME=1 -DHAVE_CHMOD=1 -DHAVE_DUP2=1
  -DHAVE_ENDGRENT=1 -DHAVE_ENDPWENT=1 -DHAVE_EXECVP=1 -DHAVE_FCNTL=1
  -DHAVE_FORK=1 -DHAVE_GETCWD=1 -DHAVE_GETEGID=1 -DHAVE_GETEUID=1
  -DHAVE_GETGID=1 -DHAVE_GETGRENT=1 -DHAVE_GETGRGID=1 -DHAVE_GETGRNAM=1
  -DHAVE_GETPGRP=1 -DHAVE_GETPID=1 -DHAVE_GETPPID=1 -DHAVE_GETPWENT=1
  -DHAVE_GETPWUID=1 -DHAVE_GETTIMEOFDAY=1 -DHAVE_GETUID=1 -DHAVE_GETWD=1
  -DHAVE_KILL=1 -DHAVE_LGAMMA=1 -DHAVE_LINK=1 -DHAVE_LOCALTIME_R=1
  -DHAVE_LSTAT=1 -DHAVE_MEMMOVE=1 -DHAVE_MKDIR=1 -DHAVE_MKFIFO=1
  -DHAVE_MKSTEMP=1 -DHAVE_ON_EXIT=1 -DHAVE_PIPE=1 -DHAVE_POLL=1
  -DHAVE_PUTENV=1 -DHAVE_RAISE=1 -DHAVE_READLINK=1 -DHAVE_REALPATH=1
  -DHAVE_RENAME=1 -DHAVE_RINDEX=1 -DHAVE_RMDIR=1 -DHAVE_ROUND=1
  -DHAVE_SELECT=1 -DHAVE_SETGRENT=1 -DHAVE_SETLOCALE=1
  -DHAVE_SETPWENT=1 -DHAVE_SETVBUF=1 -DHAVE_SIGACTION=1
  -DHAVE_SIGLONGJMP=1 -DHAVE_SIGPENDING=1 -DHAVE_SIGPROCMASK=1
  -DHAVE_SIGSUSPEND=1 -DHAVE_SNPRINTF=1 -DHAVE_STAT=1 -DHAVE_STRCASECMP=1
  -DHAVE_STRDUP=1 -DHAVE_STRERROR=1 -DHAVE_STRNCASECMP=1 -DHAVE_STRPTIME=1
  -DHAVE_STRSIGNAL=1 -DHAVE_SYMLINK=1 -DHAVE_TEMPNAM=1 -DHAVE_TGAMMA=1
  -DHAVE_UMASK=1 -DHAVE_UNAME=1 -DHAVE_UNLINK=1 -DHAVE_USLEEP=1
  -DHAVE_UTIME=1 -DHAVE_VFPRINTF=1 -DHAVE_VSPRINTF=1 -DHAVE_VSNPRINTF=1
  -DHAVE_WAITPID=1 -DHAVE_STRFTIME=1 -DHAVE_LIBDL=1 -DHAVE_DLOPEN=1
  -DHAVE_DLSYM=1 -DHAVE_DLERROR=1 -DHAVE_DLCLOSE=1 -DHAVE_DLOPEN_API=1
  -DENABLE_DYNAMIC_LINKING=1 -DHAVE_TIMEVAL=1 -DHAVE_FINITE=1
  -DHAVE_ISNAN=1 -DHAVE_ISINF=1 -DHAVE_COPYSIGN=1 -DHAVE_DECL_SIGNBIT=1
  -DHAVE_ACOSH=1 -DHAVE_ASINH=1 -DHAVE_ATANH=1 -DHAVE_ERF=1 -DHAVE_ERFC=1
  -DHAVE_EXP2=1 -DHAVE_LOG2=1 -DHAVE_STRUCT_STAT_ST_BLKSIZE=1
  -DHAVE_STRUCT_STAT_ST_BLOCKS=1 -DHAVE_STRUCT_STAT_ST_RDEV=1
  -DHAVE_STRUCT_TM_TM_ZONE=1 -DHAVE_TM_ZONE=1 -DUSE_READLINE=1
  -DEXCEPTION_IN_MATH=1 -DRETSIGTYPE=void -DHAVE_DECL_SYS_SIGLIST=1
  -DHAVE_POSIX_SIGNALS=1 -DRETSIGTYPE_IS_VOID=1 -DHAVE_GETRUSAGE=1
  -DHAVE_TIMES=1 -DYYTEXT_POINTER=1 -DGNUPLOT_BINARY="gnuplot"

User-preferences (please do not edit this section):
--------------------------------------------------

  EDITOR = emacs
  EXEC_PATH = /usr/lib/octave/3.0.3/site/exec/i486-pc-linux-gnu:/usr/lib/octave/api-v32/site/exec/i486-pc-linux-gnu:/usr/lib/octave/site/exec/i486-pc-linux-gnu:/usr/lib/octave/3.0.3/exec/i486-pc-linux-gnu:/usr/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
  IMAGE_PATH = .:/usr/share/octave/3.0.3/imagelib
  PAGER = pager
  PS1 = \s:\#>
  PS2 = >
  PS4 = +
  beep_on_error = 0
  completion_append_char =
  crash_dumps_octave_core = 1
  echo_executing_commands = 0
  fixed_point_format = 0
  gnuplot_binary = gnuplot
  gnuplot_command_end =

  gnuplot_command_plot = pl
  gnuplot_command_replot = rep
  gnuplot_command_splot = sp
  gnuplot_command_title = t
  gnuplot_command_using = u
  gnuplot_command_with = w
  history_file = /home/amamonov/.octave_hist
  history_size = 1024
  ignore_function_time_stamp = system
  info_file = /usr/share/info/octave3.0.info
  info_program = info
  makeinfo_program = makeinfo
  max_recursion_depth = 256
  output_max_field_width = 5
  output_precision = 5
  page_output_immediately = 0
  page_screen_output = 1
  print_answer_id_name = 1
  print_empty_dimensions = 1
  save_precision = 16
  saving_history = 1
  sighup_dumps_octave_core = 1
  sigterm_dumps_octave_core = 1
  silent_functions = 0
  split_long_rows = 1
  string_fill_char =
  struct_levels_to_print = 2
  suppress_verbose_help_message = 0
Bug report for Octave 3.0.3 configured for i486-pc-linux-gnu

Description:
-----------

Consider the following piece fo code:

figure(1); clf;
hold on;
title('ABC');
plot([1,2],[1,2],'b-');
plot([1,2],[2,1],'r-');

Expected behavior is that Octave would turn hold on for the figure,
and each successive plot would not overwrite the previous one.
This is indeed the behavior in 3.0.1 and 3.0.2. But in 3.0.3 hold
is not turned on for some reason, and so only the last (red) line is displayed.

Changing the order of commands to

figure(1); clf;
title('ABC');
hold on;
plot([1,2],[1,2],'b-');
plot([1,2],[2,1],'r-');

fixes the problem, however it requires making changes to numerous scripts
that used to work OK with the previous versions of Octave (and Matlab).

Repeat-By:
---------

figure(1); clf;
hold on;
title('ABC');
plot([1,2],[1,2],'b-');
plot([1,2],[2,1],'r-');

Fix:
---

No fix proposed.

Configuration (please do not edit this section):
-----------------------------------------------

uname output:     Linux ubuntu 2.6.27-7-generic #1 SMP Fri Oct 17
22:24:21 UTC 2008 i686 GNU/Linux
configure opts:   '--build=i486-linux-gnu' '--prefix=/usr'
'--datadir=/usr/share' '--libdir=/usr/lib' '--libexecdir=/usr/lib'
'--infodir=/usr/share/info' '--mandir=/usr/share/man'
'--with-blas=-lblas-3gf' '--with-lapack=-llapackgf-3' '--with-hdf5'
'--with-fftw' '--enable-shared' '--enable-rpath' '--disable-static'
'build_alias=i486-linux-gnu' 'CC=gcc' 'CFLAGS=-g -O2' 'LDFLAGS='
'CPPFLAGS=' 'CXX=g++' 'CXXFLAGS=-g -O2' 'F77=gfortran' 'FFLAGS=-g -O2'
Fortran compiler: gfortran
FFLAGS:           -O2 -g
F2C:              @F2C@
F2CFLAGS:         @F2CFLAGS@
FLIBS:            -L/usr/lib/gcc/i486-linux-gnu/4.3.2
-L/usr/lib/gcc/i486-linux-gnu/4.3.2/../../../../lib -L/lib/../lib
-L/usr/lib/../lib -L/usr/lib/gcc/i486-linux-gnu/4.3.2/../../.. -lhdf5
-lz -lgfortranbegin -lgfortran -lm
CPPFLAGS:
INCFLAGS:         -I. -I. -I./liboctave -I./src -I./libcruft/misc
C compiler:       gcc, version 4.3.2 (Debian 4.3.2-1)
CFLAGS:           -O2 -g
CPICFLAG:         -fPIC
C++ compiler:     g++, version 4.3.2
CXXFLAGS:         -O2 -g
CXXPICFLAG:       -fPIC
LD_CXX:           g++
LDFLAGS:
LIBFLAGS:         -L.
RLD_FLAG:         -Wl,-rpath -Wl,/usr/lib/octave-3.0.3
BLAS_LIBS:        -llapackgf-3 -lblas-3gf
FFTW_LIBS:        -lfftw3
LIBS:             -lreadline  -lncurses -ldl -lhdf5 -lz -lm
LEXLIB:
LIBGLOB:
SED:              /bin/sed
DEFS:

  -DPACKAGE_NAME="" -DPACKAGE_TARNAME="" -DPACKAGE_VERSION=""
  -DPACKAGE_STRING="" -DPACKAGE_BUGREPORT="" -DOCTAVE_SOURCE=1
  -D_GNU_SOURCE=1 -DSTDC_HEADERS=1 -DHAVE_SYS_TYPES_H=1 -DHAVE_SYS_STAT_H=1
  -DHAVE_STDLIB_H=1 -DHAVE_STRING_H=1 -DHAVE_MEMORY_H=1 -DHAVE_STRINGS_H=1
  -DHAVE_INTTYPES_H=1 -DHAVE_STDINT_H=1 -DHAVE_UNISTD_H=1 -DSEPCHAR=':'
  -DSEPCHAR_STR=":" -D__NO_MATH_INLINES=1 -DCXX_NEW_FRIEND_TEMPLATE_DECL=1
  -DCXX_ISO_COMPLIANT_LIBRARY=1 -DCXX_ABI=gnu_v3 -DHAVE_LIBM=1
  -DHAVE_QHULL=1 -DHAVE_PCRE=1 -DHAVE_REGEXEC=1 -DHAVE_REGEX=1
  -DHAVE_ZLIB_H=1 -DHAVE_ZLIB=1 -DHAVE_HDF5_H=1 -DHAVE_HDF5=1
  -DHAVE_H5GGET_NUM_OBJS=1 -DHAVE_FFTW3=1 -DHAVE_GLPK_H=1 -DHAVE_GLPK=1
  -DHAVE_CURL_CURL_H=1 -DHAVE_CURL=1 -DHAVE_IEEE754_DATA_FORMAT=1
  -DF77_FUNC(name,NAME)=name ## _ -DF77_FUNC_(name,NAME)=name ## _
  -DHAVE_BLAS=1 -DHAVE_SUITESPARSE_UMFPACK_H=1 -DHAVE_UMFPACK=1
  -DUMFPACK_SEPARATE_SPLIT=1 -DHAVE_SUITESPARSE_COLAMD_H=1
  -DHAVE_COLAMD=1 -DHAVE_SUITESPARSE_CCOLAMD_H=1 -DHAVE_CCOLAMD=1
  -DHAVE_SUITESPARSE_CHOLMOD_H=1 -DHAVE_CHOLMOD=1 -DHAVE_SUITESPARSE_CS_H=1
  -DHAVE_CXSPARSE=1 -DHAVE_GETHOSTNAME=1 -DHAVE_GETPWNAM=1 -DHAVE_DEV_T=1
  -DHAVE_INO_T=1 -DHAVE_NLINK_T=1 -DHAVE_NLINK_T=1 -DHAVE_LONG_LONG_INT=1
  -DHAVE_UNSIGNED_LONG_LONG_INT=1 -DHAVE_SIGSET_T=1 -DHAVE_SIG_ATOMIC_T=1
  -DSIZEOF_SHORT=2 -DSIZEOF_INT=4 -DSIZEOF_LONG=4 -DSIZEOF_LONG_LONG=8
  -DHAVE_ALLOCA_H=1 -DHAVE_ALLOCA=1 -DNPOS=std::string::npos
  -DHAVE_PLACEMENT_DELETE=1 -DHAVE_DYNAMIC_AUTO_ARRAYS=1 -DSTDC_HEADERS=1
  -DHAVE_DIRENT_H=1 -DTIME_WITH_SYS_TIME=1 -DHAVE_SYS_WAIT_H=1
  -DHAVE_ASSERT_H=1 -DHAVE_CURSES_H=1 -DHAVE_DLFCN_H=1 -DHAVE_FCNTL_H=1
  -DHAVE_FLOAT_H=1 -DHAVE_GRP_H=1 -DHAVE_INTTYPES_H=1 -DHAVE_LIMITS_H=1
  -DHAVE_LOCALE_H=1 -DHAVE_MEMORY_H=1 -DHAVE_NCURSES_H=1 -DHAVE_POLL_H=1
  -DHAVE_PWD_H=1 -DHAVE_STDINT_H=1 -DHAVE_STDLIB_H=1 -DHAVE_STRING_H=1
  -DHAVE_SYS_IOCTL_H=1 -DHAVE_SYS_PARAM_H=1 -DHAVE_SYS_POLL_H=1
  -DHAVE_SYS_RESOURCE_H=1 -DHAVE_SYS_SELECT_H=1 -DHAVE_SYS_STAT_H=1
  -DHAVE_SYS_TIME_H=1 -DHAVE_SYS_TIMES_H=1 -DHAVE_SYS_TYPES_H=1
  -DHAVE_SYS_UTSNAME_H=1 -DHAVE_TERMCAP_H=1 -DHAVE_UNISTD_H=1
  -DHAVE_UTIME_H=1 -DHAVE_SSTREAM=1 -DHAVE_TERMIO_H=1 -DHAVE_SGTTY_H=1
  -DHAVE_GLOB_H=1 -DHAVE_FNMATCH_H=1 -DHAVE_FNMATCH=1 -DHAVE_GLOB=1
  -DHAVE_ATEXIT=1 -DHAVE_BASENAME=1 -DHAVE_BCOPY=1 -DHAVE_BZERO=1
  -DHAVE_CANONICALIZE_FILE_NAME=1 -DHAVE_CHMOD=1 -DHAVE_DUP2=1
  -DHAVE_ENDGRENT=1 -DHAVE_ENDPWENT=1 -DHAVE_EXECVP=1 -DHAVE_FCNTL=1
  -DHAVE_FORK=1 -DHAVE_GETCWD=1 -DHAVE_GETEGID=1 -DHAVE_GETEUID=1
  -DHAVE_GETGID=1 -DHAVE_GETGRENT=1 -DHAVE_GETGRGID=1 -DHAVE_GETGRNAM=1
  -DHAVE_GETPGRP=1 -DHAVE_GETPID=1 -DHAVE_GETPPID=1 -DHAVE_GETPWENT=1
  -DHAVE_GETPWUID=1 -DHAVE_GETTIMEOFDAY=1 -DHAVE_GETUID=1 -DHAVE_GETWD=1
  -DHAVE_KILL=1 -DHAVE_LGAMMA=1 -DHAVE_LINK=1 -DHAVE_LOCALTIME_R=1
  -DHAVE_LSTAT=1 -DHAVE_MEMMOVE=1 -DHAVE_MKDIR=1 -DHAVE_MKFIFO=1
  -DHAVE_MKSTEMP=1 -DHAVE_ON_EXIT=1 -DHAVE_PIPE=1 -DHAVE_POLL=1
  -DHAVE_PUTENV=1 -DHAVE_RAISE=1 -DHAVE_READLINK=1 -DHAVE_REALPATH=1
  -DHAVE_RENAME=1 -DHAVE_RINDEX=1 -DHAVE_RMDIR=1 -DHAVE_ROUND=1
  -DHAVE_SELECT=1 -DHAVE_SETGRENT=1 -DHAVE_SETLOCALE=1
  -DHAVE_SETPWENT=1 -DHAVE_SETVBUF=1 -DHAVE_SIGACTION=1
  -DHAVE_SIGLONGJMP=1 -DHAVE_SIGPENDING=1 -DHAVE_SIGPROCMASK=1
  -DHAVE_SIGSUSPEND=1 -DHAVE_SNPRINTF=1 -DHAVE_STAT=1 -DHAVE_STRCASECMP=1
  -DHAVE_STRDUP=1 -DHAVE_STRERROR=1 -DHAVE_STRNCASECMP=1 -DHAVE_STRPTIME=1
  -DHAVE_STRSIGNAL=1 -DHAVE_SYMLINK=1 -DHAVE_TEMPNAM=1 -DHAVE_TGAMMA=1
  -DHAVE_UMASK=1 -DHAVE_UNAME=1 -DHAVE_UNLINK=1 -DHAVE_USLEEP=1
  -DHAVE_UTIME=1 -DHAVE_VFPRINTF=1 -DHAVE_VSPRINTF=1 -DHAVE_VSNPRINTF=1
  -DHAVE_WAITPID=1 -DHAVE_STRFTIME=1 -DHAVE_LIBDL=1 -DHAVE_DLOPEN=1
  -DHAVE_DLSYM=1 -DHAVE_DLERROR=1 -DHAVE_DLCLOSE=1 -DHAVE_DLOPEN_API=1
  -DENABLE_DYNAMIC_LINKING=1 -DHAVE_TIMEVAL=1 -DHAVE_FINITE=1
  -DHAVE_ISNAN=1 -DHAVE_ISINF=1 -DHAVE_COPYSIGN=1 -DHAVE_DECL_SIGNBIT=1
  -DHAVE_ACOSH=1 -DHAVE_ASINH=1 -DHAVE_ATANH=1 -DHAVE_ERF=1 -DHAVE_ERFC=1
  -DHAVE_EXP2=1 -DHAVE_LOG2=1 -DHAVE_STRUCT_STAT_ST_BLKSIZE=1
  -DHAVE_STRUCT_STAT_ST_BLOCKS=1 -DHAVE_STRUCT_STAT_ST_RDEV=1
  -DHAVE_STRUCT_TM_TM_ZONE=1 -DHAVE_TM_ZONE=1 -DUSE_READLINE=1
  -DEXCEPTION_IN_MATH=1 -DRETSIGTYPE=void -DHAVE_DECL_SYS_SIGLIST=1
  -DHAVE_POSIX_SIGNALS=1 -DRETSIGTYPE_IS_VOID=1 -DHAVE_GETRUSAGE=1
  -DHAVE_TIMES=1 -DYYTEXT_POINTER=1 -DGNUPLOT_BINARY="gnuplot"

User-preferences (please do not edit this section):
--------------------------------------------------

  EDITOR = emacs
  EXEC_PATH = /usr/lib/octave/3.0.3/site/exec/i486-pc-linux-gnu:/usr/lib/octave/api-v32/site/exec/i486-pc-linux-gnu:/usr/lib/octave/site/exec/i486-pc-linux-gnu:/usr/lib/octave/3.0.3/exec/i486-pc-linux-gnu:/usr/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
  IMAGE_PATH = .:/usr/share/octave/3.0.3/imagelib
  PAGER = pager
  PS1 = \s:\#>
  PS2 = >
  PS4 = +
  beep_on_error = 0
  completion_append_char =
  crash_dumps_octave_core = 1
  echo_executing_commands = 0
  fixed_point_format = 0
  gnuplot_binary = gnuplot
  gnuplot_command_end =

  gnuplot_command_plot = pl
  gnuplot_command_replot = rep
  gnuplot_command_splot = sp
  gnuplot_command_title = t
  gnuplot_command_using = u
  gnuplot_command_with = w
  history_file = /home/amamonov/.octave_hist
  history_size = 1024
  ignore_function_time_stamp = system
  info_file = /usr/share/info/octave3.0.info
  info_program = info
  makeinfo_program = makeinfo
  max_recursion_depth = 256
  output_max_field_width = 5
  output_precision = 5
  page_output_immediately = 0
  page_screen_output = 1
  print_answer_id_name = 1
  print_empty_dimensions = 1
  save_precision = 16
  saving_history = 1
  sighup_dumps_octave_core = 1
  sigterm_dumps_octave_core = 1
  silent_functions = 0
  split_long_rows = 1
  string_fill_char =
  struct_levels_to_print = 2
  suppress_verbose_help_message = 0

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