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* libltdl/config/general.m4sh (sed_double_backslash): Replace

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POSIX sed script with a hack that treats up to 10 backslashes
in the input correctly and is portable to Solaris /bin/sed.
This commit is contained in:
Ralf Wildenhues 2007-02-11 11:07:08 +00:00
parent 2139117724
commit 8faf59a421
2 changed files with 30 additions and 5 deletions
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6
ChangeLog
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@ -1,3 +1,9 @@
2007-02-08 Ralf Wildenhues <Ralf.Wildenhues@gmx.de>
* libltdl/config/general.m4sh (sed_double_backslash): Replace
POSIX sed script with a hack that treats up to 10 backslashes
in the input correctly and is portable to Solaris /bin/sed.
2007-02-08 Ralf Wildenhues <Ralf.Wildenhues@gmx.de>
* tests/testsuite.at (LT_AT_TAG): Skip also if the compiler

29
libltdl/config/general.m4sh
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@ -1,7 +1,7 @@
m4_if([# general.m4sh -- general shell script boiler plate -*- Autoconf -*-
# Written by Gary V. Vaughan <gary@gnu.org>, 2004
# Copyright (C) 2004, 2005 Free Software Foundation, Inc.
# Copyright (C) 2004, 2005, 2007 Free Software Foundation, Inc.
# This is free software; see the source for copying conditions. There is NO
# warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
@ -100,10 +100,29 @@ double_quote_subst='s/\([["`\\]]\)/\\\1/g'
# `\'-ed in input to the same. If an odd number of `\' preceded a '$'
# in input to double_quote_subst, that '$' was protected from expansion.
# Since each input `\' is now two `\'s, look for any number of runs of
# four `\'s followed by two `\'s and then a '$'. `\' that '$'. Note
# that the embedded single quotes serve only to enhance readability.
sed_double_backslash='s/^\(\(''\\\\''\\\\''\)*''\\\\''\)\$/\1\\$/;
s/\([[^\\]]\(''\\\\''\\\\''\)*''\\\\''\)\$/\1\\$/g'
# four `\'s followed by two `\'s and then a '$'. `\' that '$'.
#
# Note in the first, non-portable but general version, the embedded single
# quotes serve only to enhance readability.
#sed_double_backslash='s/^\(\(''\\\\''\\\\''\)*''\\\\''\)\$/\1\\$/;
# s/\([[^\\]]\(''\\\\''\\\\''\)*''\\\\''\)\$/\1\\$/g'
bs='\\'
bs2='\\\\'
bs4='\\\\\\\\'
dollar='\$'
sed_double_backslash="\
s/^$bs2$dollar/$bs&/
s/^$bs4$bs2$dollar/$bs&/
s/^$bs4$bs4$bs2$dollar/$bs&/
s/^$bs4$bs4$bs4$bs2$dollar/$bs&/
s/^$bs4$bs4$bs4$bs4$bs2$dollar/$bs&/
s/^$bs4$bs4$bs4$bs4$bs4$bs2$dollar/$bs&/
s/\\([[^$bs]]\\)\\($bs2$dollar\\)/\\1$bs\\2/g
s/\\([[^$bs]]\\)\\($bs4$bs2$dollar\\)/\\1$bs\\2/g
s/\\([[^$bs]]\\)\\($bs4$bs4$bs2$dollar\\)/\\1$bs\\2/g
s/\\([[^$bs]]\\)\\($bs4$bs4$bs4$bs2$dollar\\)/\\1$bs\\2/g
s/\\([[^$bs]]\\)\\($bs4$bs4$bs4$bs4$bs2$dollar\\)/\\1$bs\\2/g
s/\\([[^$bs]]\\)\\($bs4$bs4$bs4$bs4$bs4$bs2$dollar\\)/\\1$bs\\2/g"
# Standard options:
opt_dry_run=false