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2004-03-31Junio Hamano, junio at twinsun dot com writes:Eric Andersen
The sed command in busybox 1.0.0-pre8 loses leading whitespace in 'a' command ('i' and 'c' commands are also affected). A patch to fix this is attached at the end of this message. The following is a transcript that reproduces the problem. The first run uses busybox 1.0.0-pre3 as "/bin/sed" command, which gets the expected result. Later in the test, /bin/sed symlink is changed to point at busybox 1.0.0-pre8 and the test script is run again, which shows the failure. === reproduction recipe === * Part 1. Use busybox 1.0.0-pre3 as sed; this works. root# cd /tmp root# cat 1.sh #!/bin/sh cd /tmp rm -f ipsec.conf ipsec.conf+ cat >ipsec.conf <<\EOF version 2.0 config setup klipsdebug=none plutodebug=none plutostderrlog=/dev/null conn %default keyingtries=1 ... EOF sed -e '/^config setup/a\ nat_traversal=yes' ipsec.conf >ipsec.conf+ mv -f ipsec.conf+ ipsec.conf root# sh -x 1.sh + cd /tmp + rm -f ipsec.conf ipsec.conf+ + cat + sed -e /^config setup/a\ nat_traversal=yes ipsec.conf + mv -f ipsec.conf+ ipsec.conf root# cat ipsec.conf version 2.0 config setup nat_traversal=yes klipsdebug=none plutodebug=none plutostderrlog=/dev/null conn %default keyingtries=1 ... root# sed --version sed: invalid option -- - BusyBox v1.00-pre3 (2004.02.26-18:47+0000) multi-call binary Usage: sed [-nef] pattern [files...] * Part 2. Continuing from the above, use busybox 1.0.0-pre8 as sed; this fails. root# ln -s busybox-pre8 /bin/sed-8 root# mv /bin/sed-8 /bin/sed root# sed --version This is not GNU sed version 4.0 root# sed -- BusyBox v1.00-pre8 (2004.03.30-02:44+0000) multi-call binary Usage: sed [-nef] pattern [files...] root# sh -x 1.sh + cd /tmp + rm -f ipsec.conf ipsec.conf+ + cat + sed -e /^config setup/a\ nat_traversal=yes ipsec.conf + mv -f ipsec.conf+ ipsec.conf root# cat ipsec.conf version 2.0 config setup nat_traversal=yes klipsdebug=none plutodebug=none plutostderrlog=/dev/null conn %default keyingtries=1 ... root# === reproduction recipe ends here === This problem was introduced in 1.0.0-pre4. The problem is that the command argument parsing code strips leading whitespaces too aggressively. When running the above example, the piece of code in question gets "\n\tnat_traversal=yes" as its argument in cmdstr variable (shown part in the following patch). What it needs to do at this point is to strip the first newline and nothing else, but it instead strips all the leading whitespaces at the beginning of the string, thus losing the tab character. The following patch fixes this.
2004-03-15Remove trailing whitespace. Update copyright to include 2004.Eric Andersen
2004-02-18Add -i option to sed, to edit files in-place.Rob Landley
2004-02-04Rob Landley writes:Eric Andersen
While building glibc with busybox as part of the development environment, I found a bug in glibc's regexec can throw sed into an endless loop. This fixes it. Should I put an #ifdef around it or something? (Note, this patch also contains the "this is not gnu sed 4.0" hack I posted earlier, which is also needed to build glibc...)
2004-01-04Thinko in s//options. (Whitespace skipping in the wrong place.)Rob Landley
2003-12-23Patch from Matt Kraai:Eric Andersen
sed is broken: busybox sed -n '/^a/,/^a/p' >output <<EOF a b a b EOF cmp -s output - <<EOF a b a EOF The attached patch fixes it.
2003-10-09Fix some warnings that have crept in recentlyEric Andersen
2003-10-09Comaptability with gcc-2.95Glenn L McGrath
2003-10-04Patch from Rob Landley;Glenn L McGrath
Moving on to building diffutils, busybox sed needs this patch to get past the first problem. (Passing it a multi-line command line argument with -e works, but if you don't use -e it doesn't break up the multiple lines...)
2003-10-01Patch from Rob Landley to fix backrefsGlenn L McGrath
2003-10-01Patch by Rob Landley, fix "newline after edit command"Glenn L McGrath
2003-10-01Patch by Rob Landley, work in progress update, fixes lots of bugs,Glenn L McGrath
introduces a few others (but they are being worked on)
2003-09-24Fix some typo's, remove some extra free statementsGlenn L McGrath
2003-09-16Configuration option to define wether to follows GNU sed's behaviour Glenn L McGrath
or the posix standard. Put the cleanup code back the way it was.
2003-09-16Fix a bug that creapt in recently with substitution subprinting, and addGlenn L McGrath
a test for it.
2003-09-15Fix a simple mistake with pattern space, and add a test for itGlenn L McGrath
2003-09-15Fix some memory allocation problemsGlenn L McGrath
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2003-09-15Add a test for the 'P' command and fix current implementation so itGlenn L McGrath
doesnt permanently modify the pattern space.
2003-09-15A test and fix for the sed 'n' commandGlenn L McGrath
2003-09-15Fix for the sed-append-next-line testGlenn L McGrath
2003-09-15Fix recursion problemGlenn L McGrath
2003-09-14Memory cleanups and fix for `echo "foo" | sed 's/foo/bar/;H;q'`Glenn L McGrath
2003-09-14Cleanup memory usageGlenn L McGrath
2003-09-14The previous fix for 's/a/1/;s/b/2/;t one;p;:one;p' broke the case ofGlenn L McGrath
echo fooba | ./busybox sed -n 's/foo//;s/bar/found/p' I really need to start adding these tests to the testsuite. keep the substituted and altered flags seperate
2003-09-14Preserve substitution flag value within the current line.Glenn L McGrath
Fixed the following testcase # cat strings |./busybox sed -n -f test3.sed 1 1 2 c c # cat strings a b c
2003-09-14Fix branching commands.Glenn L McGrath
If a label isnt specified, jump to end of script, not the last command in the script. Print an error and exit if you try and jump to a non-existant label Works for the following testcase # cat strings a b c d e f g # cat strings | ./busybox sed -n '/d/b;p' a b c e f g
2003-09-14Patch from Rob Landley Glenn L McGrath
Fixed a memory leak in add_cmd/add_cmd_str by moving the allocation of sed_cmd down to where it's actually first needed. In get_address, if index_of_next_unescaped_regexp_delim ever failed, we wouldn't notice because the return value was added to idx, which was already guaranteed to be > 0. (This is buried in the changes made when I redid get_address to be based on pointer arithmetic, because all the tests were gratuitously dereferencing with a constant zero, which wasn't obvious.) Comment in parse_regex_delim was wrong: 's' and 'y' both call it. The reason "sed_cmd->num_backrefs = 0;" isn't needed is that sed_cmd was allocated with cmalloc, which zeroes memory. Different handling of space after \ in i... Different handling of pattern "s/a/b s/c/d" Cool, resursive reads don't cause a crash. :) Fixed "sed -f blah filename - < filename" since GNU sed was handling both - and filenames on the same line. (You can even list - more than once, although it's immediate EOF...)
2003-09-14Stupid typoGlenn L McGrath
2003-09-14Fix some memory allocation problemsGlenn L McGrath
2003-09-13Fix the following testcase by disabling global substitution if the regexGlenn L McGrath
is anchored to the start of line, there can be only one subst. echo "aah" | sed 's/^a/b/g'
2003-09-13Fix the following testcase by storing the state of the adress match withGlenn L McGrath
the command. # cat strings a b c d e f g # ./busybox sed '1,2d;4,$d' <strings c # ./busybox sed '4,$d;1,2d' <strings # sed '4,$d;1,2d' <strings c # sed '1,2d;4,$d' <strings c
2003-08-30Fix the substitution print subcommand, it should only print if itsGlenn L McGrath
own substitution matched, not previous ones. e.g echo fooba | sed -n 's/foo//;s/bar/found/p' shouldnt print anything
2003-04-26New commands, 'G' and 'H'Glenn L McGrath
2003-04-12Fix logic error in grouped commandsGlenn L McGrath
2003-04-11Fix up indentingGlenn L McGrath
2003-04-09Really fix the 'r' commandGlenn L McGrath
2003-04-09Fix the sed 'r' commandGlenn L McGrath
2003-04-09fix substitution when replacing with &, we shouldnt check for an escape ↵Glenn L McGrath
charcter. Its already been taken care of _somewhere_ else
2003-04-09Label ends at a newline, update comments, rename linked list fieldGlenn L McGrath
2003-04-08Run through indentGlenn L McGrath
2003-04-08Fixes block commands to correctly identify end of block, recognise the #n ↵Glenn L McGrath
directive, fix substitue command when regex isnt specified
2003-04-07Add hold space commands 'g', 'h', 'x'Glenn L McGrath
2003-04-07Rename "line" to pattern_space to be more descriptive and closer to the ↵Glenn L McGrath
POSIX description
2003-03-30Group common stringGlenn L McGrath
2003-03-30Small fix for sed 'y' commandGlenn L McGrath
2003-03-30sed 'y' command, simplify some other codeGlenn L McGrath
2003-03-30Experimental support for embeded newline. (im evil)Glenn L McGrath
Fix segfault when using 'N' with an odd number of lines.
2003-03-28Still fine tunning the printing of the substitute commandGlenn L McGrath
2003-03-28sed 't' branching commandGlenn L McGrath
2003-03-28Fix sed 's' command's 'p' flag, so it can print line twiceGlenn L McGrath