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Chet Ramey
141 lines
4.9 KiB
Plaintext
141 lines
4.9 KiB
Plaintext
This file details the changes between the previous release of CWRU bash
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(07/11/93) and this release.
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1. Bugs Fixed
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Readline's vi-mode once again has TAB bound to completion; entering `posix
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mode' changes it to self-insert
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Bash now binds its special emacs-mode functions directly into
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emacs_meta_keymap so that eight-bit character handling does not interfere
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Some source restructuring: more extern functions are defined in header files
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and not in C source files
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The handling of `line number' inside functions is now more correct and
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closer to reality
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Some functions of `general use' were moved to general.c (vfree,
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full_pathname)
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A bug that caused some redirections to be applied twice was fixed in
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execute_command_internal (dispose of redirection_undo_list after copying it;
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ditto for exec_redirection_undo_list)
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The exit status of a command that is not found is 126, as Posix.2 specifies
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More speed improvements -- bash now runs as fast as the SunOS sh on
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Haertel's `shell benchmark'
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Instead of returning pointers to -1, bash and the readline, history, and
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glob libraries now return pointers to special `error pointers', which the
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calling code checks for in place of -1
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Fixed a problem with canonicalize_pathname which made it get
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confused with xxx/./yyy if yyy was `.' or `..'
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Fixes to make bash recognize SVR4.2 and set USGr4_2 for SVR4.2 systems
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Fixes to the HP/UX machine descriptions to make alloca work on HPUX_9
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and to avoid `M_MACHINE redefined' warnings
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Fixes to the CRAY machine description
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Fixes to the mailpath code to make it Posix.2-compliant -- backslash
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may now quote `%' and `?'
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The namespace was further cleaned up, and more functions and variables
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were made static
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On systems with S_IFSOCK or S_ISSOCK defined in sys/stat.h, bash checks
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whether fd 0 is a socket to decide whether or not it's being started by
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rshd and to run the startup files
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Bash now gives the signal mask it inherits to its children -- previously,
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login shells cleared the signal mask
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cpp-Makefile and subst.c both used the `USE_GLOB_LIBRARY' define, but
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with different meanings; subst.c now uses `USE_POSIX_GLOB_LIBRARY'
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Fixed pattern substitution so that ${a%%$b}, where b was unset, no longer
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causes a core dump
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Changed the `test_exit' define in test.c to no longer use `longjmp' as
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the rhs or a comma-ized expression; this causes core dumps on some
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optimizer/machine combinations
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A speed hack in variables.c: if no local variables are defined for a level
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of shell context, kill_all_local_variables does not need to search the
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whole variable hash table when popping a context
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Fixed the `bind' builtin so that -m now changes the keymap for all of the
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subsequent operations
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Changed some more builtins to use internal_getopt: bind, command, export,
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readonly, declare, typeset
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Fixed fc to use the Posix.2 format for listing commands in the
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history list
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Changed bg to set `!', as Posix.2 specifies
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Fixed ulimit.def to compile if RLIMIT_RSS is not defined,
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as some systems seem to have it
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Replaced lib/malloc/alloca.c with the version from emacs 19. The old one
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lives in alloca.c.old
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malloc.c now uses the ANSI C features to `stringize' macro arguments if
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__STDC__ is defined
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Fixes to the GNU malloc library from glibc 1.06 and Mike Haertel
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Fixes to readline key binding and lookup for Cray systems, which don't
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like the casting that readline does
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Fixes to all readline library source files to clean up the code: make sure
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`int'-returning functions use `return x;' rather than `return;', declare all
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arguments, even the `int' ones, and make some functions void. Cleaned up
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the code formatting a little, too.
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The readline completer now double-quotes filenames with special word-break
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characters, so that tilde expansion still works
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^C now breaks out of keyboard macros
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If being compiled as part of the shell, readline no longer attempts to
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handle SIGTTIN, SIGTTOU, or SIGTSTP
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tilde_expansion_failure_hook is now a CPFunction rather than a Function,
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since that's how it's used
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Readline vi-mode `change case' function now skips over characters which
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are neither upper nor lower case
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Readline vi-mode now allows replacement to be redoable with `.'
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2. New Features
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A `strict Posix.2' mode, enabled with the -posix startup option or
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setting the POSIXLY_CORRECT variable (see CWRU/POSIX.NOTES for a
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description of the changed behavior)
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`ONESHOT' is now an option in config.h
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cpp-Makefile assumes that fixed header files are present if gcc is being
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used
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The redirections attached to a function declaration are now part of that
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function, applied when the function is executed, as specified by Posix.2.
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This caused a change to parse.y that resulted in 66 shift/reduce
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conflicts(!)
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All of the OP= functions that Posix.2 specifies are now implemented for
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both `let' and arithmetic substitution
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The `command' builtin has acquired the Posix.2 `-v' and `-V' options
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(this shares code with the `type' builtin)
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A new `bash_builtins' man page, like the `csh_builtins' page on some
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systems
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