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fix for race condition with process creation and terminal process group; changes to printf builtin for multibyte characters

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This commit is contained in:
Chet Ramey
2023-09-11 10:09:22 -04:00
parent aab2c1fb1d
commit 32826f717d
19 changed files with 9543 additions and 9559 deletions
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.gitignore
+5
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@@ -40,6 +40,7 @@ builtins/psize.aux
doc/Makefile
examples/loadables/Makefile
examples/loadables/Makefile.inc
examples/loadables/Makefile.sample
examples/loadables/perl/Makefile
lib/glob/Makefile
lib/intl/Makefile
@@ -82,3 +83,7 @@ tests/printenv
tests/recho
tests/xcase
tests/zecho
parser-built
y.tab.c
y.tab.h
CWRU/CWRU.chlog
+16
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@@ -7563,3 +7563,19 @@ eval.c
- parse_command: don't run pending traps if we're parsing a command
substitution
From a report from Emanuele Torre <torreemanuele6@gmail.com>
9/8
---
jobs.c
- stop_pipeline: don't have the parent set the terminal pgrp; rely on
child processes to do it to avoid potential race conditions.
From a discussion beginning at
https://lists.gnu.org/archive/html/bug-bash/2023-08/msg00087.html
builtins/printf.def
- bexpand: when parsing the string to be expanded, consume entire
multibyte characters at a time, in case their encoding includes a
'\\'
- printf_builtin: when parsing the format string, consume entire
multibyte characters at a time unless they begin with '\\' or '%',
to avoid characters whose encoding contains those characters
Makefile.in
+1 -1
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@@ -907,7 +907,7 @@ uninstall: .made
-( cd $(PO_DIR) ; $(MAKE) $(MFLAGS) DESTDIR=$(DESTDIR) $@ )
-( cd $(LOADABLES_DIR) && $(MAKE) $(MFLAGS) DESTDIR=$(DESTDIR) $@ )
.PHONY: basic-clean clean realclean maintainer-clean distclean mostlyclean maybe-clean
.PHONY: basic-clean clean maintainer-clean distclean mostlyclean maybe-clean
LIB_SUBDIRS = ${RL_LIBDIR} ${HIST_LIBDIR} ${TERM_LIBDIR} ${GLOB_LIBDIR} \
${INTL_LIBDIR} ${TILDE_LIBDIR} ${ALLOC_LIBDIR} ${SH_LIBDIR}
builtins/printf.def
+26 -8
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@@ -268,7 +268,7 @@ printf_builtin (WORD_LIST *list)
char convch, thisch, nextch, *format, *modstart, *precstart, *fmt, *start;
#if defined (HANDLE_MULTIBYTE)
char mbch[25]; /* 25 > MB_LEN_MAX, plus can handle 4-byte UTF-8 and large Unicode characters*/
int mbind, mblen;
int mbind, mblen, mb_cur_max;
#endif
#if defined (ARRAY_VARS)
int arrayflags;
@@ -342,6 +342,8 @@ printf_builtin (WORD_LIST *list)
if (format == 0 || *format == 0)
return (EXECUTION_SUCCESS);
mb_cur_max = MB_CUR_MAX;
/* Basic algorithm is to scan the format string for conversion
specifications -- once one is found, find out if the field
width or precision is a '*'; if it is, gather up value. Note,
@@ -380,7 +382,16 @@ printf_builtin (WORD_LIST *list)
if (*fmt != '%')
{
PC (*fmt); /* should print entire multibyte char here */
#if defined (HANDLE_MULTIBYTE)
size_t l;
int i;
l = mbcharlen (fmt, mb_cur_max);
for (i = 0; i < l; i++, fmt++)
PC (*fmt);
fmt--; /* for loop will increment it for us again */
#else
PC (*fmt);
#endif
continue;
}
@@ -1143,12 +1154,13 @@ tescape (char *estart, char *cp, int *lenp, int *sawc)
static char *
bexpand (char *string, int len, int *sawc, int *lenp)
{
int temp;
char *ret, *r, *s, c;
int temp, c;
char *ret, *r, *s, *send;
#if defined (HANDLE_MULTIBYTE)
char mbch[25];
int mbind, mblen;
#endif
DECLARE_MBSTATE;
if (string == 0 || len == 0)
{
@@ -1171,15 +1183,21 @@ bexpand (char *string, int len, int *sawc, int *lenp)
ret = (char *)xmalloc (len + 1);
#endif
send = string + len;
for (r = ret, s = string; s && *s; )
{
c = *s++;
if (c != '\\' || *s == '\0')
if (s[1] == '\0')
{
*r++ = c;
*r++ = *s;
break;
}
else if (*s != '\\')
{
COPY_CHAR_P (r, s, send);
continue;
}
/* output entire multibyte character here? */
else
s++; /* *s == '\\' */
temp = 0;
#if defined (HANDLE_MULTIBYTE)
doc/bash.html
+16 -5
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@@ -3,7 +3,7 @@
</HEAD>
<BODY><TABLE WIDTH=100%>
<TR>
<TH ALIGN=LEFT width=33%>BASH(1)<TH ALIGN=CENTER width=33%>2023 August 15<TH ALIGN=RIGHT width=33%>BASH(1)
<TH ALIGN=LEFT width=33%>BASH(1)<TH ALIGN=CENTER width=33%>2023 August 31<TH ALIGN=RIGHT width=33%>BASH(1)
</TR>
</TABLE>
<BR><A HREF="#index">Index</A>
@@ -3610,7 +3610,9 @@ Any element of an array may be referenced using
${<I>name</I>[<I>subscript</I>]}. The braces are required to avoid
conflicts with pathname expansion. If
<I>subscript</I> is <B>@</B> or <B>*</B>, the word expands to
all members of <I>name</I>. These subscripts differ only when the
all members of <I>name</I>,
unless noted in the description of a builtin or word expansion.
These subscripts differ only when the
word appears within double quotes. If the word is double-quoted,
${<I>name</I>[*]} expands to a single
word with the value of each array member separated by the first
@@ -6288,6 +6290,12 @@ True if the shell variable
<I>varname</I>
is set (has been assigned a value).
If <I>varname</I> is an indexed
array variable name subscripted by <I>@</I> or <I>*</I>,
this returns true if the array has any set elements.
If <I>varname</I> is an associative
array variable name subscripted by <I>@</I> or <I>*</I>,
this returns true if an element with that key is set.
<DT><B>-R </B><I>varname</I>
<DD>
@@ -12173,6 +12181,9 @@ as a shell variable name.
The %s and %c format specifiers accept an l (long) modifier, which forces
them to convert the argument string to a wide-character string and apply
any supplied field width and precision in terms of characters, not bytes.
<P>
Arguments to non-string format specifiers are treated as C constants,
@@ -15115,7 +15126,7 @@ There may be only one active coprocess at a time.
<HR>
<TABLE WIDTH=100%>
<TR>
<TH ALIGN=LEFT width=33%>GNU Bash 5.3<TH ALIGN=CENTER width=33%>2023 August 15<TH ALIGN=RIGHT width=33%>BASH(1)
<TH ALIGN=LEFT width=33%>GNU Bash 5.3<TH ALIGN=CENTER width=33%>2023 August 31<TH ALIGN=RIGHT width=33%>BASH(1)
</TR>
</TABLE>
<HR>
@@ -15221,7 +15232,7 @@ There may be only one active coprocess at a time.
<DT><A HREF="#lbDI">BUGS</A><DD>
</DL>
<HR>
This document was created by man2html from /usr/local/src/bash/bash-20230812/doc/bash.1.<BR>
Time: 15 August 2023 16:12:02 EDT
This document was created by man2html from /usr/local/src/bash/bash-20230907/doc/bash.1.<BR>
Time: 10 September 2023 17:14:39 EDT
</BODY>
</HTML>
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@@ -4,9 +4,9 @@
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<!-- This text is a brief description of the features that are present in
the Bash shell (version 5.3, 15 August 2023).
the Bash shell (version 5.3, 31 August 2023).
This is Edition 5.3, last updated 15 August 2023,
This is Edition 5.3, last updated 31 August 2023,
of The GNU Bash Reference Manual,
for Bash, Version 5.3.
@@ -77,10 +77,10 @@ Next: <a href="#Introduction" accesskey="n" rel="next">Introduction</a>, Previou
<span id="Bash-Features-1"></span><h1 class="top">Bash Features</h1>
<p>This text is a brief description of the features that are present in
the Bash shell (version 5.3, 15 August 2023).
the Bash shell (version 5.3, 31 August 2023).
The Bash home page is <a href="http://www.gnu.org/software/bash/">http://www.gnu.org/software/bash/</a>.
</p>
<p>This is Edition 5.3, last updated 15 August 2023,
<p>This is Edition 5.3, last updated 31 August 2023,
of <cite>The GNU Bash Reference Manual</cite>,
for <code>Bash</code>, Version 5.3.
</p>
@@ -2111,7 +2111,7 @@ When &lsquo;<samp>+=</samp>&rsquo; is applied to an array variable using compoun
(see <a href="#Arrays">Arrays</a>), the
variable&rsquo;s value is not unset (as it is when using &lsquo;<samp>=</samp>&rsquo;), and new
values are appended to the array beginning at one greater than the array&rsquo;s
maximum index (for indexed arrays), or added as additional key-value pairs
maximum index (for indexed arrays), or added as additional key-value pairs
in an associative array.
When applied to a string-valued variable, <var>value</var> is expanded and
appended to the variable&rsquo;s value.
@@ -5594,7 +5594,8 @@ formats quote the argument string using single quotes.
<dt><span><code>%Q</code></span></dt>
<dd><p>like <code>%q</code>, but applies any supplied precision to the <var>argument</var>
before quoting it.
</p></dd>
</p>
</dd>
<dt><span><code>%(<var>datefmt</var>)T</code></span></dt>
<dd><p>Causes <code>printf</code> to output the date-time string resulting from using
<var>datefmt</var> as a format string for <code>strftime</code>(3).
@@ -5619,6 +5620,7 @@ as a shell variable name.
them to convert the argument string to a wide-character string and apply
any supplied field width and precision in terms of characters, not bytes.
</p>
<p>Arguments to non-string format specifiers are treated as C language constants,
except that a leading plus or minus sign is allowed, and if the leading
character is a single or double quote, the value is the ASCII value of
@@ -8590,6 +8592,12 @@ option to the <code>set</code> builtin (see <a href="#The-Set-Builtin">The Set B
</dd>
<dt><span><code>-v <var>varname</var></code></span></dt>
<dd><p>True if the shell variable <var>varname</var> is set (has been assigned a value).
If <var>varname</var> is an indexed
array variable name subscripted by &lsquo;<samp>@</samp>&rsquo; or &lsquo;<samp>*</samp>&rsquo;,
this returns true if the array has any set elements.
If <var>varname</var> is an associative
array variable name subscripted by &lsquo;<samp>@</samp>&rsquo; or &lsquo;<samp>*</samp>&rsquo;,
this returns true if an element with that key is set.
</p>
</dd>
<dt><span><code>-R <var>varname</var></code></span></dt>
@@ -8950,7 +8958,9 @@ using the compound assignment syntax; see <a href="#Shell-Parameters">Shell Para
The braces are required to avoid
conflicts with the shell&rsquo;s filename expansion operators. If the
<var>subscript</var> is &lsquo;<samp>@</samp>&rsquo; or &lsquo;<samp>*</samp>&rsquo;, the word expands to all members
of the array <var>name</var>. These subscripts differ only when the word
of the array <var>name</var>, unless otherwise noted in the description of a
builtin or word expansion.
These subscripts differ only when the word
appears within double quotes.
If the word is double-quoted,
<code>${<var>name</var>[*]}</code> expands to a single word with
doc/bashref.log
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@@ -1,12 +1,11 @@
This is pdfTeX, Version 3.141592653-2.6-1.40.22 (TeX Live 2021/MacPorts 2021.58693_0) (preloaded format=etex 2021.8.30) 16 AUG 2023 10:12
This is pdfTeX, Version 3.141592653-2.6-1.40.22 (TeX Live 2021/MacPorts 2021.58693_0) (preloaded format=pdfetex 2021.8.30) 10 SEP 2023 17:14
entering extended mode
restricted \write18 enabled.
file:line:error style messages enabled.
%&-line parsing enabled.
**\nonstopmode \input /usr/local/src/bash/bash-20230812/doc/bashref.texi \input
/usr/local/src/bash/bash-20230812/doc/bashref.texi
(/usr/local/src/bash/bash-20230812/doc/bashref.texi
(/usr/local/src/bash/bash-20230812/doc/texinfo.tex
**\input /usr/local/src/bash/bash-20230907/doc/bashref.texi
(/usr/local/src/bash/bash-20230907/doc/bashref.texi
(/usr/local/src/bash/bash-20230907/doc/texinfo.tex
Loading texinfo [version 2015-11-22.14]:
\outerhsize=\dimen16
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@@ -162,20 +161,23 @@ This is `epsf.tex' v2.7.4 <14 February 2011>
texinfo.tex: doing @include of version.texi
(/usr/local/src/bash/bash-20230812/doc/version.texi) [1] [2]
(/usr/local/build/bash/bash-20230812/doc/bashref.toc [-1] [-2] [-3]) [-4]
Chapter 1
(/usr/local/src/bash/bash-20230907/doc/version.texi) [1{/opt/local/var/db/texmf
/fonts/map/pdftex/updmap/pdftex.map}] [2]
(/usr/local/build/bash/bash-20230907/doc/bashref.toc [-1] [-2] [-3]) [-4]
(/usr/local/build/bash/bash-20230907/doc/bashref.toc)
(/usr/local/build/bash/bash-20230907/doc/bashref.toc) Chapter 1
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(/usr/local/build/bash/bash-20230812/doc/bashref.aux)
(/usr/local/build/bash/bash-20230907/doc/bashref.aux)
\openout1 = `bashref.aux'.
Chapter 2
[1] [2]
Chapter 2 [1] [2]
@cpindfile=@write2
\openout2 = `bashref.cp'.
[3] Chapter 3 [4] [5] [6] [7]
[3] Chapter 3 [4] [5] [6] [7]
@vrindfile=@write3
\openout3 = `bashref.vr'.
@@ -227,7 +229,7 @@ Overfull \hbox (5.95723pt too wide) in paragraph at lines 724--725
[49] [50] [51]
[52] [53] [54] [55] [56] [57] [58] [59] [60] [61] [62] [63] [64] [65] [66]
[67] [68]
Overfull \hbox (38.26585pt too wide) in paragraph at lines 5401--5401
Overfull \hbox (38.26585pt too wide) in paragraph at lines 5407--5407
[]@texttt set [-abefhkmnptuvxBCEHPT] [-o @textttsl option-name@texttt ] [--] [
-] [@textttsl ar-gu-ment []@texttt ][]
@@ -240,7 +242,7 @@ Overfull \hbox (38.26585pt too wide) in paragraph at lines 5401--5401
.etc.
Overfull \hbox (38.26585pt too wide) in paragraph at lines 5402--5402
Overfull \hbox (38.26585pt too wide) in paragraph at lines 5408--5408
[]@texttt set [+abefhkmnptuvxBCEHPT] [+o @textttsl option-name@texttt ] [--] [
-] [@textttsl ar-gu-ment []@texttt ][]
@@ -259,7 +261,7 @@ Overfull \hbox (38.26585pt too wide) in paragraph at lines 5402--5402
[119] [120]
texinfo.tex: doing @include of rluser.texi
(/usr/local/src/bash/bash-20230812/lib/readline/doc/rluser.texi
(/usr/local/src/bash/bash-20230907/lib/readline/doc/rluser.texi
Chapter 8 [121] [122] [123] [124] [125] [126] [127] [128] [129] [130] [131]
[132]
Underfull \hbox (badness 7540) in paragraph at lines 878--884
@@ -309,10 +311,10 @@ gnored[]
texinfo.tex: doing @include of hsuser.texi
(/usr/local/src/bash/bash-20230812/lib/readline/doc/hsuser.texi Chapter 9
(/usr/local/src/bash/bash-20230907/lib/readline/doc/hsuser.texi Chapter 9
[158] [159] [160] [161] [162] [163]) Chapter 10 [164] [165] [166] [167]
[168]
Underfull \hbox (badness 10000) in paragraph at lines 9729--9738
Underfull \hbox (badness 10000) in paragraph at lines 9743--9752
[]@textrm All of the fol-low-ing op-tions ex-cept for `@texttt alt-array-implem
entation[]@textrm '[],
@@ -325,7 +327,7 @@ entation[]@textrm '[],
.etc.
Underfull \hbox (badness 10000) in paragraph at lines 9729--9738
Underfull \hbox (badness 10000) in paragraph at lines 9743--9752
@textrm `@texttt disabled-builtins[]@textrm '[], `@texttt direxpand-default[]@t
extrm '[], `@texttt strict-posix-default[]@textrm '[], and
@@ -341,16 +343,38 @@ extrm '[], `@texttt strict-posix-default[]@textrm '[], and
[178] [179] Appendix C [180]
texinfo.tex: doing @include of fdl.texi
(/usr/local/src/bash/bash-20230812/doc/fdl.texi
(/usr/local/src/bash/bash-20230907/doc/fdl.texi
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eop end
%%Page: 102 108
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eop end
%%Page: 105 111
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Ft(]})24 b Fu(expands)k(to)i(the)g(length)g(of)f Ft(${)p
Fj(name)p Ft([)p Fj(subscript)p Ft(]})p Fu(.)35 b(If)150
1066 y Fr(subscript)28 b Fu(is)g(`)p Ft(@)p Fu(')f(or)h(`)p
Ft(*)p Fu(',)g(the)g(expansion)f(is)g(the)h(n)m(um)m(b)s(er)e(of)i
(elemen)m(ts)g(in)f(the)h(arra)m(y)-8 b(.)41 b(If)27
b(the)g Fr(subscript)150 1176 y Fu(used)34 b(to)h(reference)g(an)f
(elemen)m(t)i(of)f(an)f(indexed)g(arra)m(y)h(ev)-5 b(aluates)36
b(to)f(a)g(n)m(um)m(b)s(er)e(less)i(than)f(zero,)i(it)150
1285 y(is)c(in)m(terpreted)h(as)f(relativ)m(e)i(to)f(one)f(greater)h
(than)f(the)h(maxim)m(um)f(index)f(of)h(the)h(arra)m(y)-8
b(,)33 b(so)g(negativ)m(e)150 1395 y(indices)d(coun)m(t)h(bac)m(k)h
(from)e(the)g(end)g(of)g(the)h(arra)m(y)-8 b(,)31 b(and)f(an)g(index)g
(of)h(-1)g(refers)f(to)h(the)g(last)g(elemen)m(t.)275
1544 y(Referencing)41 b(an)f(arra)m(y)h(v)-5 b(ariable)42
b(Bash)30 b(F)-8 b(eatures)2439 b(105)150 299 y(w)m(ord)25
b(app)s(ears)g(within)g(double)h(quotes.)39 b(If)26 b(the)f(w)m(ord)h
(is)f(double-quoted,)i Ft(${)p Fj(name)p Ft([*]})c Fu(expands)i(to)i(a)
150 408 y(single)h(w)m(ord)f(with)f(the)i(v)-5 b(alue)27
b(of)h(eac)m(h)g(arra)m(y)g(mem)m(b)s(er)e(separated)i(b)m(y)f(the)g
(\014rst)f(c)m(haracter)j(of)e(the)h Ft(IFS)150 518 y
Fu(v)-5 b(ariable,)34 b(and)e Ft(${)p Fj(name)p Ft([@]})e
Fu(expands)h(eac)m(h)j(elemen)m(t)g(of)f Fr(name)k Fu(to)c(a)g
(separate)h(w)m(ord.)46 b(When)33 b(there)150 628 y(are)39
b(no)f(arra)m(y)g(mem)m(b)s(ers,)i Ft(${)p Fj(name)p
Ft([@]})35 b Fu(expands)i(to)i(nothing.)64 b(If)38 b(the)g
(double-quoted)g(expansion)150 737 y(o)s(ccurs)26 b(within)g(a)g(w)m
(ord,)h(the)g(expansion)f(of)h(the)f(\014rst)g(parameter)g(is)h(joined)
f(with)g(the)g(b)s(eginning)g(part)150 847 y(of)j(the)g(original)g(w)m
(ord,)g(and)f(the)h(expansion)f(of)h(the)g(last)h(parameter)f(is)f
(joined)h(with)f(the)h(last)g(part)g(of)150 956 y(the)h(original)h(w)m
(ord.)40 b(This)29 b(is)h(analogous)h(to)f(the)g(expansion)f(of)h(the)g
(sp)s(ecial)h(parameters)f(`)p Ft(@)p Fu(')f(and)h(`)p
Ft(*)p Fu('.)150 1066 y Ft(${#)p Fj(name)p Ft([)p Fj(subscript)p
Ft(]})21 b Fu(expands)k(to)h(the)g(length)h(of)f Ft(${)p
Fj(name)p Ft([)p Fj(subscript)p Ft(]})p Fu(.)34 b(If)25
b Fr(subscript)i Fu(is)f(`)p Ft(@)p Fu(')g(or)150 1176
y(`)p Ft(*)p Fu(',)j(the)g(expansion)g(is)g(the)g(n)m(um)m(b)s(er)e(of)
i(elemen)m(ts)h(in)e(the)h(arra)m(y)-8 b(.)41 b(If)29
b(the)g Fr(subscript)g Fu(used)f(to)h(reference)150 1285
y(an)36 b(elemen)m(t)i(of)e(an)h(indexed)e(arra)m(y)i(ev)-5
b(aluates)38 b(to)f(a)g(n)m(um)m(b)s(er)e(less)h(than)g(zero,)j(it)e
(is)f(in)m(terpreted)h(as)150 1395 y(relativ)m(e)28 b(to)f(one)f
(greater)i(than)d(the)i(maxim)m(um)f(index)f(of)h(the)h(arra)m(y)-8
b(,)28 b(so)e(negativ)m(e)i(indices)e(coun)m(t)h(bac)m(k)150
1504 y(from)j(the)g(end)g(of)h(the)f(arra)m(y)-8 b(,)32
b(and)e(an)g(index)g(of)g(-1)h(refers)f(to)h(the)g(last)g(elemen)m(t.)
275 1639 y(Referencing)41 b(an)f(arra)m(y)h(v)-5 b(ariable)42
b(without)e(a)h(subscript)e(is)i(equiv)-5 b(alen)m(t)42
b(to)f(referencing)g(with)g(a)150 1653 y(subscript)34
b(to)f(referencing)g(with)g(a)150 1748 y(subscript)34
b(of)i(0.)57 b(An)m(y)35 b(reference)h(to)g(a)g(v)-5
b(ariable)37 b(using)e(a)g(v)-5 b(alid)36 b(subscript)f(is)g(legal,)k
(and)c(Bash)h(will)150 1763 y(create)c(an)e(arra)m(y)h(if)f(necessary)
-8 b(.)275 1912 y(An)35 b(arra)m(y)i(v)-5 b(ariable)37
(and)c(Bash)h(will)150 1858 y(create)c(an)e(arra)m(y)h(if)f(necessary)
-8 b(.)275 1992 y(An)35 b(arra)m(y)i(v)-5 b(ariable)37
b(is)g(considered)f(set)h(if)f(a)h(subscript)e(has)h(b)s(een)g
(assigned)g(a)h(v)-5 b(alue.)59 b(The)36 b(n)m(ull)150
2021 y(string)30 b(is)h(a)g(v)-5 b(alid)30 b(v)-5 b(alue.)275
2170 y(It)29 b(is)h(p)s(ossible)f(to)h(obtain)g(the)f(k)m(eys)i
2102 y(string)30 b(is)h(a)g(v)-5 b(alid)30 b(v)-5 b(alue.)275
2236 y(It)29 b(is)h(p)s(ossible)f(to)h(obtain)g(the)f(k)m(eys)i
(\(indices\))f(of)f(an)h(arra)m(y)g(as)f(w)m(ell)i(as)f(the)f(v)-5
b(alues.)41 b($)p Fi({)p Fu(!)p Fr(name)5 b Fu([@])p
Fi(})150 2280 y Fu(and)39 b($)p Fi({)p Fu(!)p Fr(name)5
Fi(})150 2346 y Fu(and)39 b($)p Fi({)p Fu(!)p Fr(name)5
b Fu([*])p Fi(})43 b Fu(expand)c(to)i(the)f(indices)h(assigned)f(in)g
(arra)m(y)g(v)-5 b(ariable)41 b Fr(name)p Fu(.)70 b(The)39
b(treatmen)m(t)150 2389 y(when)i(in)g(double)g(quotes)h(is)f(similar)h
b(treatmen)m(t)150 2455 y(when)i(in)g(double)g(quotes)h(is)f(similar)h
(to)h(the)e(expansion)h(of)f(the)h(sp)s(ecial)g(parameters)g(`)p
Ft(@)p Fu(')g(and)f(`)p Ft(*)p Fu(')150 2499 y(within)30
b(double)g(quotes.)275 2648 y(The)25 b Ft(unset)g Fu(builtin)g(is)h
Ft(@)p Fu(')g(and)f(`)p Ft(*)p Fu(')150 2565 y(within)30
b(double)g(quotes.)275 2699 y(The)25 b Ft(unset)g Fu(builtin)g(is)h
(used)f(to)i(destro)m(y)f(arra)m(ys.)40 b Ft(unset)29
b Fj(name)p Ft([)p Fj(subscript)p Ft(])22 b Fu(destro)m(ys)k(the)g
(arra)m(y)150 2757 y(elemen)m(t)40 b(at)e(index)g Fr(subscript)p
(arra)m(y)150 2809 y(elemen)m(t)40 b(at)e(index)g Fr(subscript)p
Fu(.)62 b(Negativ)m(e)41 b(subscripts)c(to)i(indexed)e(arra)m(ys)i(are)
f(in)m(terpreted)h(as)f(de-)150 2867 y(scrib)s(ed)30
f(in)m(terpreted)h(as)f(de-)150 2918 y(scrib)s(ed)30
b(ab)s(o)m(v)m(e.)42 b(Unsetting)31 b(the)g(last)g(elemen)m(t)h(of)f
(an)g(arra)m(y)g(v)-5 b(ariable)31 b(do)s(es)f(not)h(unset)f(the)h(v)-5
b(ariable.)150 2977 y Ft(unset)29 b Fj(name)p Fu(,)39
b(ariable.)150 3028 y Ft(unset)29 b Fj(name)p Fu(,)39
b(where)e Fr(name)43 b Fu(is)37 b(an)h(arra)m(y)-8 b(,)41
b(remo)m(v)m(es)e(the)f(en)m(tire)g(arra)m(y)-8 b(.)64
b Ft(unset)29 b Fj(name)p Ft([)p Fj(subscript)p Ft(])150
3086 y Fu(b)s(eha)m(v)m(es)h(di\013eren)m(tly)g(dep)s(ending)d(on)j
3137 y Fu(b)s(eha)m(v)m(es)h(di\013eren)m(tly)g(dep)s(ending)d(on)j
(the)f(arra)m(y)h(t)m(yp)s(e)f(when)g(giv)m(en)h(a)f(subscript)g(of)g
(`)p Ft(*)p Fu(')g(or)h(`)p Ft(@)p Fu('.)40 b(When)150
3196 y Fr(name)46 b Fu(is)40 b(an)h(asso)s(ciativ)m(e)i(arra)m(y)-8
3247 y Fr(name)46 b Fu(is)40 b(an)h(asso)s(ciativ)m(e)i(arra)m(y)-8
b(,)44 b(it)d(remo)m(v)m(es)h(the)f(elemen)m(t)h(with)e(k)m(ey)h(`)p
Ft(*)p Fu(')g(or)f(`)p Ft(@)p Fu('.)72 b(If)40 b Fr(name)45
b Fu(is)c(an)150 3305 y(indexed)30 b(arra)m(y)-8 b(,)31
b Fu(is)c(an)150 3357 y(indexed)30 b(arra)m(y)-8 b(,)31
b Ft(unset)e Fu(remo)m(v)m(es)j(all)f(of)g(the)f(elemen)m(ts,)i(but)e
(do)s(es)g(not)h(remo)m(v)m(e)h(the)e(arra)m(y)h(itself.)275
3454 y(When)k(using)g(a)i(v)-5 b(ariable)36 b(name)g(with)g(a)g
3491 y(When)k(using)g(a)i(v)-5 b(ariable)36 b(name)g(with)g(a)g
(subscript)e(as)i(an)g(argumen)m(t)g(to)h(a)f(command,)h(suc)m(h)f(as)
150 3564 y(with)k Ft(unset)p Fu(,)h(without)e(using)h(the)g(w)m(ord)f
150 3600 y(with)k Ft(unset)p Fu(,)h(without)e(using)h(the)g(w)m(ord)f
(expansion)h(syn)m(tax)g(describ)s(ed)f(ab)s(o)m(v)m(e,)44
b(the)c(argumen)m(t)g(is)150 3673 y(sub)5 b(ject)25 b(to)h(the)g
b(the)c(argumen)m(t)g(is)150 3710 y(sub)5 b(ject)25 b(to)h(the)g
(shell's)g(\014lename)f(expansion.)39 b(If)25 b(\014lename)h(expansion)
f(is)g(not)h(desired,)g(the)f(argumen)m(t)150 3783 y(should)k(b)s(e)h
(quoted.)275 3932 y(The)20 b Ft(declare)p Fu(,)h Ft(local)p
f(is)g(not)h(desired,)g(the)f(argumen)m(t)150 3820 y(should)k(b)s(e)h
(quoted.)275 3954 y(The)20 b Ft(declare)p Fu(,)h Ft(local)p
Fu(,)h(and)e Ft(readonly)f Fu(builtins)h(eac)m(h)i(accept)g(a)g
Ft(-a)e Fu(option)h(to)h(sp)s(ecify)f(an)f(indexed)150
4042 y(arra)m(y)28 b(and)f(a)h Ft(-A)e Fu(option)i(to)g(sp)s(ecify)f
4064 y(arra)m(y)28 b(and)f(a)h Ft(-A)e Fu(option)i(to)g(sp)s(ecify)f
(an)h(asso)s(ciativ)m(e)i(arra)m(y)-8 b(.)40 b(If)27
b(b)s(oth)g(options)h(are)g(supplied,)f Ft(-A)f Fu(tak)m(es)150
4151 y(precedence.)55 b(The)35 b Ft(read)f Fu(builtin)h(accepts)h(a)g
4173 y(precedence.)55 b(The)35 b Ft(read)f Fu(builtin)h(accepts)h(a)g
Ft(-a)e Fu(option)i(to)g(assign)f(a)g(list)h(of)f(w)m(ords)g(read)g
(from)g(the)150 4261 y(standard)h(input)g(to)i(an)f(arra)m(y)-8
(from)g(the)150 4283 y(standard)h(input)g(to)i(an)f(arra)m(y)-8
b(,)40 b(and)c(can)h(read)g(v)-5 b(alues)38 b(from)e(the)h(standard)g
(input)f(in)m(to)i(individual)150 4370 y(arra)m(y)f(elemen)m(ts.)62
(input)f(in)m(to)i(individual)150 4392 y(arra)m(y)f(elemen)m(ts.)62
b(The)36 b Ft(set)g Fu(and)h Ft(declare)d Fu(builtins)j(displa)m(y)g
(arra)m(y)g(v)-5 b(alues)37 b(in)g(a)g(w)m(a)m(y)h(that)g(allo)m(ws)150
4480 y(them)30 b(to)h(b)s(e)f(reused)g(as)g(input.)150
4502 y(them)30 b(to)h(b)s(e)f(reused)g(as)g(input.)150
4742 y Fs(6.8)68 b(The)45 b(Directory)g(Stac)l(k)150
4902 y Fu(The)21 b(directory)h(stac)m(k)h(is)e(a)h(list)g(of)f(recen)m
(tly-visited)j(directories.)39 b(The)20 b Ft(pushd)g
doc/builtins.ps
+2354 -2297
View File
File diff suppressed because it is too large Load Diff
doc/rbash.ps
+1 -1
View File
@@ -1,6 +1,6 @@
%!PS-Adobe-3.0
%%Creator: groff version 1.22.4
%%CreationDate: Fri Jun 16 12:13:33 2023
%%CreationDate: Sun Sep 10 17:14:43 2023
%%DocumentNeededResources: font Times-Roman
%%+ font Times-Bold
%%DocumentSuppliedResources: procset grops 1.22 4
examples/loadables/finfo.c
+1 -1
View File
@@ -126,7 +126,7 @@ finfo_main(int argc, char **argv)
case 'p': flags |= OPT_PERM; break;
case 'P':
flags |= OPT_PMASK;
pmask = octal(sh_optarg);
pmask = read_octal(sh_optarg);
if (pmask < 0) {
builtin_error ("invalid mode: %s", sh_optarg);
return(1);
include/shmbutil.h
+21
View File
@@ -561,4 +561,25 @@ extern int locale_utf8locale; /* XXX */
goto add_string
#endif /* HANDLE_MULTIBYTE */
#if defined (HANDLE_MULTIBYTE)
static inline size_t
mbcharlen(char *s, size_t maxlen)
{
size_t l;
DECLARE_MBSTATE;
if (maxlen == 1 || is_basic (*s))
return 1;
else if (locale_utf8locale && UTF8_SINGLEBYTE (*s))
return (*s != 0);
else
l = mbrlen (s, maxlen, &state);
if (MB_INVALIDCH (l))
return (1);
return l;
}
#else
#define mbcharlen(s, n) (1)
#endif /* HANDLE_MULTIBYTE */
#endif /* _SH_MBUTIL_H_ */
jobs.c
+3
View File
@@ -717,8 +717,11 @@ stop_pipeline (int async, COMMAND *deferred)
* in the background.
*
*/
/* 09/08/2023 - rely on child processes to set the terminal pgrp */
#if 0
if (job_control && newjob->pgrp && (subshell_environment&SUBSHELL_ASYNC) == 0 && running_in_background == 0)
maybe_give_terminal_to (shell_pgrp, newjob->pgrp, 0);
#endif
}
}
lib/sh/fmtulong.c
+4 -8
View File
@@ -1,6 +1,6 @@
/* fmtulong.c -- Convert unsigned long int to string. */
/* Copyright (C) 1998-2011 Free Software Foundation, Inc.
/* Copyright (C) 1998-2011,2023 Free Software Foundation, Inc.
This file is part of GNU Bash, the Bourne Again SHell.
@@ -57,13 +57,9 @@ extern int errno;
#define x_digs "0123456789abcdef"
#define X_digs "0123456789ABCDEF"
/* XXX -- assumes uppercase letters, lowercase letters, and digits are
contiguous */
#define FMTCHAR(x) \
((x) < 10) ? (x) + '0' \
: (((x) < 36) ? (x) - 10 + 'a' \
: (((x) < 62) ? (x) - 36 + 'A' \
: (((x) == 62) ? '@' : '_')))
static char * const all_digs = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ@_";
#define FMTCHAR(x) all_digs[(x)]
#ifndef FL_PREFIX
# define FL_PREFIX 0x01 /* add 0x, 0X, or 0 prefix as appropriate */
support/bashbug.sh
-274
View File
@@ -1,274 +0,0 @@
#!/bin/sh -
#
# bashbug - create a bug report and mail it to the bug address
#
# The bug address depends on the release status of the shell. Versions
# with status `devel', `alpha', `beta', or `rc' mail bug reports to
# chet@cwru.edu and, optionally, to bash-testers@cwru.edu.
# Other versions send mail to bug-bash@gnu.org.
#
# Copyright (C) 1996-2021 Free Software Foundation, Inc.
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
# configuration section:
# these variables are filled in by the make target in Makefile
#
MACHINE="!MACHINE!"
OS="!OS!"
CC="!CC!"
CFLAGS="!CFLAGS!"
RELEASE="!RELEASE!"
PATCHLEVEL="!PATCHLEVEL!"
RELSTATUS="!RELSTATUS!"
MACHTYPE="!MACHTYPE!"
PATH=/bin:/usr/bin:/usr/local/bin:$PATH
export PATH
# Check if TMPDIR is set, default to /tmp
: ${TMPDIR:=/tmp}
#Securely create a temporary directory for the temporary files
TEMPDIR=$TMPDIR/bbug.$$
(umask 077 && mkdir "$TEMPDIR") || {
echo "$0: could not create temporary directory" >&2
exit 1
}
TEMPFILE1=$TEMPDIR/bbug1
TEMPFILE2=$TEMPDIR/bbug2
USAGE="Usage: $0 [--help] [--version] [bug-report-email-address]"
VERSTR="GNU bashbug, version ${RELEASE}.${PATCHLEVEL}-${RELSTATUS}"
do_help= do_version=
while [ $# -gt 0 ]; do
case "$1" in
--help) shift ; do_help=y ;;
--version) shift ; do_version=y ;;
--) shift ; break ;;
-*) echo "bashbug: ${1}: invalid option" >&2
echo "$USAGE" >&2
exit 2 ;;
*) break ;;
esac
done
if [ -n "$do_version" ]; then
echo "${VERSTR}"
exit 0
fi
if [ -n "$do_help" ]; then
echo "${VERSTR}"
echo "${USAGE}"
echo
cat << HERE_EOF
Bashbug is used to send mail to the Bash maintainers
for when Bash doesn't behave like you'd like, or expect.
Bashbug will start up your editor (as defined by the shell's
EDITOR environment variable) with a preformatted bug report
template for you to fill in. The report will be mailed to the
bug-bash mailing list by default. See the manual for details.
If you invoke bashbug by accident, just quit your editor without
saving any changes to the template, and no bug report will be sent.
HERE_EOF
exit 0
fi
# Figure out how to echo a string without a trailing newline
N=`echo 'hi there\c'`
case "$N" in
*c) n=-n c= ;;
*) n= c='\c' ;;
esac
BASHTESTERS="bash-testers@cwru.edu"
case "$RELSTATUS" in
alpha*|beta*|devel*|rc*) BUGBASH=chet@cwru.edu ;;
*) BUGBASH=bug-bash@gnu.org ;;
esac
case "$RELSTATUS" in
alpha*|beta*|devel*|rc*)
echo "$0: This is a testing release. Would you like your bug report"
echo "$0: to be sent to the bash-testers mailing list?"
echo $n "$0: Send to bash-testers? $c"
read ans
case "$ans" in
y*|Y*) BUGBASH="${BUGBASH},${BASHTESTERS}" ;;
esac ;;
esac
BUGADDR="${1-$BUGBASH}"
if [ -z "$DEFEDITOR" ] && [ -z "$EDITOR" ]; then
if [ -x /usr/bin/editor ]; then
DEFEDITOR=editor
elif [ -x /usr/local/bin/ce ]; then
DEFEDITOR=ce
elif [ -x /usr/local/bin/emacs ]; then
DEFEDITOR=emacs
elif [ -x /usr/contrib/bin/emacs ]; then
DEFEDITOR=emacs
elif [ -x /usr/bin/emacs ]; then
DEFEDITOR=emacs
elif [ -x /usr/bin/xemacs ]; then
DEFEDITOR=xemacs
elif [ -x /usr/bin/nano ]; then
DEFEDITOR=nano
elif [ -x /usr/contrib/bin/jove ]; then
DEFEDITOR=jove
elif [ -x /usr/local/bin/jove ]; then
DEFEDITOR=jove
elif [ -x /usr/bin/vi ]; then
DEFEDITOR=vi
else
echo "$0: No default editor found: attempting to use vi" >&2
DEFEDITOR=vi
fi
fi
: ${EDITOR=$DEFEDITOR}
: ${USER=${LOGNAME-`whoami`}}
trap 'rm -rf "$TEMPDIR"; exit 1' 1 2 3 13 15
trap 'rm -rf "$TEMPDIR"' 0
UN=
if (uname) >/dev/null 2>&1; then
UN=`uname -a`
fi
if [ -f /usr/lib/sendmail ] ; then
RMAIL="/usr/lib/sendmail"
SMARGS="-i -t"
elif [ -f /usr/sbin/sendmail ] ; then
RMAIL="/usr/sbin/sendmail"
SMARGS="-i -t"
else
RMAIL=rmail
SMARGS="$BUGADDR"
fi
INITIAL_SUBJECT='[50 character or so descriptive subject here (for reference)]'
cat > "$TEMPFILE1" <<EOF
From: ${USER}
To: ${BUGADDR}
Subject: ${INITIAL_SUBJECT}
Configuration Information [Automatically generated, do not change]:
Machine: $MACHINE
OS: $OS
Compiler: $CC
Compilation CFLAGS: $CFLAGS
uname output: $UN
Machine Type: $MACHTYPE
Bash Version: $RELEASE
Patch Level: $PATCHLEVEL
Release Status: $RELSTATUS
Description:
[Detailed description of the problem, suggestion, or complaint.]
Repeat-By:
[Describe the sequence of events that causes the problem
to occur.]
Fix:
[Description of how to fix the problem. If you don't know a
fix for the problem, don't include this section.]
EOF
cp "$TEMPFILE1" "$TEMPFILE2"
chmod u+w "$TEMPFILE1"
trap '' 2 # ignore interrupts while in editor
edstat=1
while [ $edstat -ne 0 ]; do
$EDITOR "$TEMPFILE1"
edstat=$?
if [ $edstat -ne 0 ]; then
echo "$0: editor \`$EDITOR' exited with nonzero status."
echo "$0: Perhaps it was interrupted."
echo "$0: Type \`y' to give up, and lose your bug report;"
echo "$0: type \`n' to re-enter the editor."
echo $n "$0: Do you want to give up? $c"
read ans
case "$ans" in
[Yy]*) exit 1 ;;
esac
continue
fi
# find the subject from the temp file and see if it's been changed
CURR_SUB=`grep '^Subject: ' "$TEMPFILE1" | sed 's|^Subject:[ ]*||' | sed 1q`
case "$CURR_SUB" in
"${INITIAL_SUBJECT}")
echo
echo "$0: You have not changed the subject from the default."
echo "$0: Please use a more descriptive subject header."
echo "$0: Type \`y' to give up, and lose your bug report;"
echo "$0: type \`n' to re-enter the editor."
echo $n "$0: Do you want to give up? $c"
read ans
case "$ans" in
[Yy]*) exit 1 ;;
esac
echo "$0: The editor will be restarted in five seconds."
sleep 5
edstat=1
;;
esac
done
trap 'rm -rf "$TEMPDIR"; exit 1' 2 # restore trap on SIGINT
if cmp -s "$TEMPFILE1" "$TEMPFILE2"
then
echo "File not changed, no bug report submitted."
exit
fi
echo $n "Send bug report to ${BUGADDR}? [y/n] $c"
read ans
case "$ans" in
[Nn]*) exit 0 ;;
esac
${RMAIL} $SMARGS < "$TEMPFILE1" || {
cat "$TEMPFILE1" >> $HOME/dead.bashbug
echo "$0: mail to ${BUGADDR} failed: report saved in $HOME/dead.bashbug" >&2
echo "$0: please send it manually to ${BUGADDR}" >&2
}
exit 0