dmbcs/i-bash
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Imported from ../bash-2.02.tar.gz.

Browse source
This commit is contained in:
Jari Aalto 1998-04-17 19:52:44 +00:00
commit cce855bc5b
323 changed files with 33916 additions and 12321 deletions
Download patch file Download diff file Expand all files Collapse all files

383
CHANGES
View file

@ -1,3 +1,386 @@
This document details the changes between this version, bash-2.02-beta2,
and the previous version, bash-2.02-beta1.
1. Changes to Bash
a. A bug was fixed that caused the terminal process group to be set
incorrectly when performing command substitution of builtins in a
pipeline.
------------------------------------------------------------------------------
This document details the changes between this version, bash-2.02-beta2,
and the previous version, bash-2.02-beta1.
1. Changes to Bash
a. Attempting to `wait' for stopped jobs now generates a warning message.
b. Pipelines which exit due to SIGPIPE in non-interactive shells are now
not reported if the shell is compiled -DDONT_REPORT_SIGPIPE.
c. Some changes were made to builtins/psize.sh and support/bashbug.sh to
attempt to avoid some /tmp file races and surreptitious file
substitutions.
d. Fixed a bug that caused the shell not to compile if configured with
dparen arithmetic but without aliases.
e. Fixed a bug that caused the input stream to be switched when assigning
empty arrays with `bash -c'.
f. A bug was fixed in the readline expansion glue code that caused bash to
dump core when expanding lines with an unclosed single quote.
g. A fix was made to the `cd' builtin so that using a non-empty directory
from $CDPATH results in an absolute pathname of the new current working
directory to be displayed after the current directory is changed.
h. Fixed a bug in the variable assignment code that caused the shell to
dump core when referencing an unset variable with `set -u' enabled in
an assignment statement preceding a command.
i. Fixed a bug in the exit trap code that caused reserved words to not be
recognized under certain circumstances.
j. Fixed a bug in the parameter pattern substitution code so that quote
removal is performed.
k. The shell should now configure correctly on Apple Rhapsody systems.
l. The `kill' builtin now prints a usage message if it is not passed any
arguments.
------------------------------------------------------------------------------
This document details the changes between this version, bash-2.02-beta1,
and the previous version, bash-2.02-alpha1.
1. Changes to Bash
a. A few compilation bugs were fixed in the new extended globbing code.
b. Executing arithmetic commands now sets the command name to `((' so
error messages look right.
c. Fixed some build problems with various configuration options.
d. The `printf' builtin now aborts immediately if an illegal format
character is encountered.
e. The code that creates here-documents now behaves better if the file it's
trying to create already exists for some reason.
f. Fixed a problem with the extended globbing code that made patterns like
`x+*' expand incorrectly.
g. The prompt string expansion code no longer quotes tildes with backslashes.
h. The bash getcwd() implementation in lib/sh/getcwd.c now behaves better in
the presence of lstat(2) failures.
i. Fixed a bug with strsub() that caused core dumps when executing `fc -s'.
j. The mail checking code now ensures that it has a valid default mailpath.
k. A bug was fixed that caused local variables to be unset inappropriately
when sourcing a script from within another sourced script.
l. A bug was fixed in the history saving code so that functions are saved
in the history list correctly if `cmdhist' is enabled, but `lithist'
is not.
m. A bug was fixed that caused printf overflows when displaying error
messages.
n. It should be easier to build the loadble builtins in examples/loadables,
though some manual editing of the generated Makefile is still required.
o. The user's primary group is now always ${GROUPS[0]}.
p. Some updates were made to support/config.guess from the GNU master copy.
q. Some changes were made to the autoconf support for Solaris 2.6 large
files.
r. The `command' builtins now does the right thing when confstr(3) cannot
find a value for _CS_PATH.
s. Extended globbing expressions like `*.!(c)' are not history expanded if
`extglob' is enabled.
t. Using the `-P' option to `cd' will force the value that is assigned to
PWD to not contain any symbolic links.
2. Changes to Readline
a. The code that prints completion listings now behaves better if one or
more of the filenames contains non-printable characters.
b. The time delay when showing matching parentheses is now 0.5 seconds.
------------------------------------------------------------------------------
This document details the changes between this version, bash-2.02-alpha1,
and the previous version, bash-2.01.1-release.
1. Changes to Bash
a. OS-specific configuration changes for: BSD/OS 3.x, Minix 2.x,
Solaris 2.6, SINIX SVR4.
b. Changes were made to the generated `info' files so that `install-info'
works correctly.
c. PWD is now auto-exported.
d. A fix was made to the pipeline code to make sure that the shell forks
to execute simple commands consisting solely of assignment statements.
e. Changes to the test suite for systems with 14-character filenames.
f. The default sizes of some internal hash tables have been made smaller
to reduce the shell's memory footprint.
g. The `((...))' arithmetic command is now executed directly instead of
being translated into `let "..."'.
h. Fixes were made to the expansion code so that "$*", "$@", "${array[@]}",
and "${array[@]}" expand correctly when IFS does not contain a space
character, is unset, or is set to NULL.
i. The indirect expansion code (${!var}) was changed so that the only
valid values of `var' are variable names, positional parameters, `#',
`@', and `*'.
j. An arithmetic expression error in a $((...)) expansion now causes a
non-interactive shell running in posix mode to exit.
k. Compound array assignment now splits the words within the parentheses
on shell metacharacters like the parser would before expansing them
and performing the assignment. This is for compatibility with ksh-93.
l. The internal shell backslash-quoting code (used in the output of `set'
and completion) now quotes tildes if they appear at the start of the
string or after a `=' or `:'.
m. A couple of bugs with `shopt -o' were fixed.
n. `bash +o' now displays the same output as `set +o' before starting an
interactive shell.
o. A bug that caused command substitution and the `eval' builtin to
occasionally free memory twice when an error was encountered was fixed.
p. The filename globbing code no longer requires read permission for a
directory when the filename to be matched does not contain any globbing
characters, as POSIX.2 specifies.
q. A bug was fixed so that the job containing the last asynchronous
process is not removed from the job table until a `wait' is executed
for that process or another asynchronous process is started. This
satisfies a POSIX.2 requirement.
r. A `select' bug was fixed so that a non-numeric user response is treated
the same as a numeric response that is out of range.
s. The shell no longer parses the value of SHELLOPTS from the environment
if it is restricted, running setuid, or running in `privileged mode'.
t. Fixes were made to enable large file support on systems such as
Solaris 2.6, where the size of a file may be larger than can be held
in an `int'.
u. The filename hashing code was fixed to not add `./' to the beginning of
filenames which already begin with `./'.
v. The configure script was changed so that the GNU termcap library is not
compiled in if `prefer-curses' has been specified.
w. HISTCONTROL and HISTIGNORE are no longer applied to the second and
subsequent lines of a multi-line command.
x. A fix was made to `disown' so that it does a better job of catching
out-of-range jobs.
y. Non-interactive shells no longer report the status of processes terminated
due to SIGINT, even if the standard output is a terminal.
z. A bug that caused the output of `jobs' to have extra carriage returns
was fixed.
aa. A bug that caused PIPESTATUS to not be set when builtins or shell
functions were executed in the foreground was fixed.
bb. Bash now attempts to detect when it is being run by sshd, and treats
that case identically to being run by rshd.
cc. A bug that caused `set -a' to export SHELLOPTS when one of the shell
options was changed was fixed.
dd. The `kill' builtin now disallows empty or missing process id arguments
instead of treating them as identical to `0', which means the current
process.
ee. `var=value declare -x var' now behaves identically to
`var=value export var'. Similarly for `var=value declare -r var' and
`var=value readonly var'.
ff. A few memory leaks were fixed.
gg. `alias' and `unalias' now print error messages when passed an argument
that is not an alias for printing or deletion, even when the shell is
not interactive, as POSIX.2 specifies.
hh. `alias' and `alias -p' now return a status of 0 when no aliases are
defined, as POSIX.2 specifes.
ii. `cd -' now prints the pathname of the new working directory if the shell
is interactive.
jj. A fix was made so that the code that binds $PWD now copes with getcwd()
returning NULL.
kk. `unset' now checks whether or not a function name it's trying to unset
is a valid shell identifier only when the shell is running in posix mode.
ll. A change was made to the code that generates filenames for here documents
to make them less prone to name collisions.
mm. The parser was changed so that `time' is recognized as a reserved word
only at the beginning of a pipeline.
nn. The pathname canonicalization code was changed so that `//' is converted
into `/', but all other pathnames beginning with `//' are left alone, as
POSIX.2 specifies.
oo. The `logout' builtin will no longer exit a non-interactive non-login
shell.
2. Changes to Readline
a. Fixed a problem in the readline test program rltest.c that caused a core
dump.
b. The code that handles parser directives in inputrc files now displays
more error messages.
c. The history expansion code was fixed so that the appearance of the
history comment character at the beginning of a word inhibits history
expansion for that word and the rest of the input line.
3. New Features in Bash
a. A new version of malloc, based on the older GNU malloc, that has many
changes, is more page-based, is more conservative with memory usage,
and does not `orphan' large blocks when they are freed.
b. A new version of gmalloc, based on the old GLIBC malloc, with many
changes and range checking included by default.
c. A new implementation of fnmatch(3) that includes full POSIX.2 Basic
Regular Expression matching, including character classes, collating
symbols, equivalence classes, and support for case-insensitive pattern
matching.
d. ksh-88 egrep-style extended pattern matching ([@+*?!](patlist)) has been
implemented, controlled by a new `shopt' option, `extglob'.
e. There is a new ksh-like `[[' compound command, which implements
extended `test' functionality.
f. There is a new `printf' builtin, implemented according to the POSIX.2
specification.
g. There is a new feature for command substitution: $(< filename) now expands
to the contents of `filename', with any trailing newlines removed
(equivalent to $(cat filename)).
h. There are new tilde prefixes which expand to directories from the
directory stack.
i. There is a new `**' arithmetic operator to do exponentiation.
j. There are new configuration options to control how bash is linked:
`--enable-profiling', to allow bash to be profiled with gprof, and
`--enable-static-link', to allow bash to be linked statically.
k. There is a new configuration option, `--enable-cond-command', which
controls whether or not the `[[' command is included. It is on by
default.
l. There is a new configuration option, `--enable-extended-glob', which
controls whether or not the ksh extended globbing feature is included.
It is enabled by default.
m. There is a new configuration #define in config.h.top that, when enabled,
will cause all login shells to source /etc/profile and one of the user-
specific login shell startup files, whether or not the shell is
interactive.
n. There is a new invocation option, `--dump-po-strings', to dump
a shell script's translatable strings ($"...") in GNU `po' format.
o. There is a new `shopt' option, `nocaseglob', to enable case-insensitive
pattern matching when globbing filenames and using the `case' construct.
p. There is a new `shopt' option, `huponexit', which, when enabled, causes
the shell to send SIGHUP to all jobs when an interactive login shell
exits.
q. `bind' has a new `-u' option, which takes a readline function name as an
argument and unbinds all key sequences bound to that function in a
specified keymap.
r. `disown' now has `-a' and `-r' options, to limit operation to all jobs
and running jobs, respectively.
s. The `shopt' `-p' option now causes output to be displayed in a reusable
format.
t. `test' has a new `-N' option, which returns true if the filename argument
has been modified since it was last accessed.
u. `umask' now has a `-p' option to print output in a reusable format.
v. A new escape sequence, `\xNNN', has been added to the `echo -e' and $'...'
translation code. It expands to the character whose ascii code is NNN
in hexadecimal.
w. The prompt string expansion code has a new `\r' escape sequence.
x. The shell may now be cross-compiled for the CYGWIN32 environment on
a Unix machine.
4. New Features in Readline
a. There is now an option for `iterative' yank-last-arg handline, so a user
can keep entering `M-.', yanking the last argument of successive history
lines.
b. New variable, `print-completions-horizontally', which causes completion
matches to be displayed across the screen (like `ls -x') rather than up
and down the screen (like `ls').
c. New variable, `completion-ignore-case', which causes filename completion
and matching to be performed case-insensitively.
d. There is a new bindable command, `magic-space', which causes history
expansion to be performed on the current readline buffer and a space to
be inserted into the result.
e. There is a new bindable command, `menu-complete', which enables tcsh-like
menu completion (successive executions of menu-complete insert a single
completion match, cycling through the list of possible completions).
f. There is a new bindable command, `paste-from-clipboard', for use on Win32
systems, to insert the text from the Win32 clipboard into the editing
buffer.
g. The key sequence translation code now understands printf-style backslash
escape sequences, including \NNN octal escapes. These escape sequences
may be used in key sequence definitions or macro values.
h. An `$include' inputrc file parser directive has been added.
------------------------------------------------------------------------------
This document details the changes between this version, bash-2.01.1-release,
and the previous version, bash-2.01-release.