bash-5.3

[Bruce Dubbs]

New minor version.

[Bruce Dubbs]

This is a terse description of the new features added to bash-5.3 since the release of bash-5.2. As always, the manual page (doc/bash.1) is the place to look for complete descriptions.

1. New Features in Bash

   a. When checking whether a script file argument is a binary file, check the
      first two lines of a script if the first line begins with `#!'.
   
   b. Bash does a better job of preserving user-supplied quotes around a word
      completion, instead of requoting it.
   
   c. Bash reports the starting line number in an error message about an
      unterminated compound command like `if' without a `fi'.
   
   d. Implement the POSIX requirement that running the `jobs' builtin removes
      jobs from the jobs list.
   
   f. Call bash signal handlers while executing programmable completion commands,
      instead of readline's.
   
   g. Print an error message if a regular expression used with [[ fails to compile.
   
   h. The `umask' builtin now has additional features for full POSIX conformance.
   
   i. `type -a -P' reports both hashed pathnames and the result of a $PATH search.
   
   j. `trap' has a new -P option that prints the trap action associated with each
      signal argument.
   
   k. The `command' builtin preceding a declaration builtin (e.g., `declare')
      preserves the special asisgnment statement parsing for the declaration
      builtin. This is a new POSIX requirement.
   
   l. `printf' uses the `alternate form' for %q and %Q to force single quoting.
   
   m. `printf' now interprets %ls (%S) and %lc (%C) as referring to wide strings
      and characters, respectively, when in a multibyte locale.
   
   n. The shell can be compiled with a different default value for the
      patsub_replacement option.
   
   o. Check for window size changes during trap commands, `bind -x' commands,
      and programmable completion.
   
   p. Treat a NULL value for $PATH as equivalent to ".".
   
   p. New loadable builtins: kv, strptime
   
   q. GLOBSORT: new variable to specify how to sort the results of pathname
      expansion (name, size, blocks, mtime, atime, ctime, numeric, none) in
      ascending or descending order.
   
   r. `compgen' has a new option: -V varname. If supplied, it stores the generated
      completions into VARNAME instead of printing them on stdout.
   
   s. New form of command substitution: ${ command; } or ${|command;} to capture
      the output of COMMAND without forking a child process and using pipes.
   
   t. array_expand_once: new shopt option, replaces assoc_expand_once
   
   u. complete/compopt new option: fullquote; sets rl_full_quoting_desired so all
      possible completions are quoted as if they were filenames.
   
   v. Command timing now allows precisions up to 6 digits instead of 3 in
      $TIMEFORMAT.
   
   w. BASH_MONOSECONDS: new dynamic variable that returns the value of the
      system's monotonic clock, if one is available.
   
   x. BASH_TRAPSIG: new variable, set to the numeric signal number of the trap
      being executed while it's running.
   
   y. The checkwinsize option can be used in subshell commands started from
      interactive shells.
   
   z. In posix mode, the test command < and > binary primaries compare strings
      using the current locale.
   
   aa. bind -x allows new key binding syntax: separate the key sequence and the
       command string with whitespace, but require the command string to be
       double-quoted if this is used. This allows different quoting options for
       the command string.
   
   bb. Print commands bound to key sequences using `bind -x' with the new key
       binding syntax it allows.
   
   cc. `read' has a new `-E' option to use readline but with the default bash
       completion (including programmable completion).
   
   dd. New bindable readline command name: `bash-vi-complete'.
   
   ee. New test builtin behavior when parsing a parenthesized subexpression and
       test was given more than 4 arguments: scan forward for a closing paren and
       call posixtest() if there are 4 or fewer arguments between the parentheses.
       Added for compatibility with coreutils test, dependent on the shell
       compatibility level. Such expressions remain ambiguous.
   
   ff. MULTIPLE_COPROCS is now enabled by default.
   
   gg. The `bind' builtin interprets additional non-option arguments after -p or
       -P as bindable command names and restricts output to the bindings for
       those names.
   
   hh. Bash now uses the login shell for $BASH if the shell is named `su' or `-su'.
   
   ii. Bash now prints job notifications if an interactive shell is running a trap,
       even though the shell is not interactive at that moment.
   
   jj. Programmable completion allows a new compspec loaded after a completion
       function returns 124 to be used in more cases.
   
   kk. ./source has a new -p PATH option, which makes it use the PATH argument
       instead of $PATH to look for the file.
   
   ll. Documentation has been significantly updated.
   
   mm. `wait -n' can now return terminated process substitutions, jobs about
       which the user has already been notified (like `wait' without options),
      
   nn. `wait -n' removes jobs from the jobs table or list of terminated children
        when in posix mode.
   
   oo. Changed the `wait' builtin behavior regarding process substitutions to
       match the documentation.
   
   pp. There is a new `bash_source_fullpath' shopt option, which makes bash put
       full pathnames into BASH_SOURCE, and a way to set a default value for it
       at configure time.
   
   qq. Posix mode now forces job notifications to occur when the new edition of
       POSIX specifies (since it now specifies them).
   
   rr. Interactive shells don't print job notifications while sourcing scripts.
   
   ss. The parser prints more information about the command it's trying to parse
       when it encounters EOF before completing the command.
   
   tt. Posix mode no longer requires function names to be valid shell identifiers.
   
   uu. If `exit' is run in a trap and not supplied an exit status argument, it
       uses the value of $? from before the trap only if it's run at the trap's
       `top level' and would cause the trap to end (that is, not in a subshell).
       This is from Posix interp 1602.
   vv. There is a new `fltexpr' loadable builtin to perform floating-point
       arithmetic similarly to `let'.
   
   ww. The `install-strip' and `strip' Makefile targets now deal with cross-
       compiling.
   

[Bruce Dubbs]

Fixed at commit 0937f177be.

    Update to readline-8.3.
    Update to perl-5.42.0.
    Update to openssl-3.5.1.
    Update to ninja-1.13.1.
    Update to linux-6.15.6.
    Update to gettext-0.25.1.
    Update to e2fsprogs-1.47.3.
    Update to bash-5.3.