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2018-07-20hush: fix handling of '' in ${var:+ARG}Denys Vlasenko
This wasn't an ash bug in dollar_altvalue9, it was hush bug (and bash!) function old new delta expand_one_var 2236 2254 +18 expand_vars_to_list 1097 1103 +6 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 2/0 up/down: 24/0) Total: 24 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-07-20hush: fix word splitting in ${v:+ARG} - dollar_altvalue1 testDenys Vlasenko
ash might be a bit buggy, need to investigate dollar_altvalue9 test function old new delta expand_one_var 1639 2236 +597 expand_variables 112 128 +16 expand_vars_to_list 1117 1097 -20 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 2/1 up/down: 613/-20) Total: 593 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-07-17hush: improve ${var#...}, ${var:+...} and ${var/.../...} - handle quotingDenys Vlasenko
dollar_altvalue1 test partially fails: word splitting of unquoted ${var:+...} is not correct function old new delta encode_then_expand_vararg - 443 +443 expand_one_var 1599 1610 +11 parse_stream 2756 2753 -3 encode_string 250 242 -8 setup_heredoc 308 298 -10 expand_and_evaluate_arith 106 96 -10 encode_then_expand_string 142 126 -16 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 1/5 up/down: 454/-47) Total: 407 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-04-11hush: fix "$v" expansion in case patterns when v='[a]'Denys Vlasenko
function old new delta run_list 1053 1063 +10 setup_redirects 311 320 +9 encode_then_expand_string 135 142 +7 run_pipe 1784 1789 +5 expand_assignments 81 86 +5 expand_string_to_string 124 125 +1 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 6/0 up/down: 37/0) Total: 37 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-04-02ash: parser: Fix parameter expansion inside inner double quotesDenys Vlasenko
Upstream email: parser: Fix parameter expansion inside inner double quotes The parsing of parameter expansion inside inner double quotes breaks because we never look for ENDVAR while innerdq is true. echo "${x#"${x+''}"''} This patch fixes it by pushing the syntax stack if innerdq is true and we enter a new parameter expansion. This patch also fixes a corner case where a bad substitution error occurs within arithmetic expansion. Reported-by: Denys Vlasenko <vda.linux@googlemail.com> Fixes: ab1cecb40478 (" parser: Add syntax stack for recursive...") Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> function old new delta readtoken1 2880 2898 +18 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-04-02hush: fix a backslash-removal bug in caseDenys Vlasenko
function old new delta run_list 1270 1053 -217 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-04-02ash: parser: Add syntax stack for recursive parsingDenys Vlasenko
This closes 10821. Upstream patch: From: Herbert Xu <herbert@gondor.apana.org.au> Date: Fri, 9 Mar 2018 00:14:02 +0800 parser: Add syntax stack for recursive parsing Without a stack of syntaxes we cannot correctly these two cases together: "${a#'$$'}" "${a#"${b-'$$'}"}" A recursive parser also helps in some other corner cases such as nested arithmetic expansion with paratheses. This patch adds a syntax stack allocated from the stack using alloca. As a side-effect this allows us to remove the naked backslashes for patterns within double-quotes, which means that EXP_QPAT also has to go. This patch also fixes removes any backslashes that precede right braces when they are present within a parameter expansion context, and backslashes that precede double quotes within inner double quotes inside a parameter expansion in a here-document context. The idea of a recursive parser is based on a patch by Harald van Dijk. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> var_bash3, var_bash4 and var_bash6 tests are updated with the output given by bash-4.3.43 With this patch, the following tests now pass for ash: dollar_repl_slash_bash2.tests squote_in_varexp2.tests squote_in_varexp.tests var_bash4.tests function old new delta readtoken1 2615 2874 +259 synstack_push - 54 +54 evalvar 574 571 -3 rmescapes 330 310 -20 subevalvar 1279 1258 -21 argstr 1146 1107 -39 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 1/4 up/down: 313/-83) Total: 230 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-03-30ash,hush: new test dollar_repl_slash_bash2.testsDenys Vlasenko
This fails for ash. hush works. Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-03-02hush: fix a='a\\'; echo "${a%\\\\}"Denys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-03-02shell: tweak bkslash_in_varexp.tests, add bkslash_in_varexp1.testsDenys Vlasenko
It turns out bkslash_in_varexp.tests was a bash bug :] ash and hush fail "corrected" bkslash_in_varexp.tests as well, just not as badly as I thought (hush gets half of the cases right). Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-03-02shell: two new tests, both fail for ash and hushDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-02-13ash : fix double-quoted "\z" handlingDenys Vlasenko
function old new delta readtoken1 2602 2608 +6 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-01-27ash: add LINENO supportDenys Vlasenko
This patch is a backport from dash of the combination of: [SHELL] Add preliminary LINENO support [VAR] Fix varinit ordering that broke fc [SHELL] Improve LINENO support function old new delta parse_command 1604 1677 +73 calcsize 156 223 +67 copynode 196 258 +62 evalcommand 1546 1606 +60 ash_main 1046 1103 +57 lookupvar 51 106 +55 evalcase 269 317 +48 evaltree 501 547 +46 evalfor 156 200 +44 evalsubshell 156 195 +39 raise_error_syntax 11 29 +18 varinit_data 120 132 +12 evalfun 270 280 +10 funcline - 4 +4 cmdtxt 569 572 +3 trapcmd 306 304 -2 ash_vmsg 153 150 -3 startlinno 4 - -4 funcnest 4 - -4 xxreadtoken 263 250 -13 readtoken1 2645 2602 -43 ------------------------------------------------------------------------------ (add/remove: 1/2 grow/shrink: 14/4 up/down: 598/-69) Total: 529 bytes text data bss dec hex filename 932834 481 6864 940179 e5893 busybox_old 933375 481 6856 940712 e5aa8 busybox_unstripped Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-21ash: improve set -x to quote strings as necessaryDenys Vlasenko
Basen on the patch from Martijn Dekker <martijn@inlv.org> function old new delta evalcommand 1161 1302 +141 maybe_single_quote - 60 +60 getoptscmd 527 546 +19 readtoken1 2819 2823 +4 localcmd 366 364 -2 evaltreenr 495 479 -16 evaltree 495 479 -16 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 3/3 up/down: 224/-34) Total: 190 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-05ash: fix escaping of a few characters (broken by last commits)Denys Vlasenko
Add a testcase which tests all ASCII punctuation escapes. NB: hush is failing this test! Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-05ash: fix matching of unicode greek letter rho (cf 81) and similar casesDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2016-10-02hush testsuite: add many tests from ash testsuiteDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2016-09-25ash: fix handling of NULs in $'abc\000def\x00asd'. Closes 9286Denys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2016-04-15ash: bash-compatible $'...' shouldn't expand in double quotesRon Yorston
Bash doesn't expand its $'...' construct in double quotes: $ echo "$'a\tb'" $'a\tb' Change BusyBox ash to do the same. This also fixes a problem with here documents where BusyBox ash gave an incorrect result for: $ cat <<EOF > '$' > EOF '$' Reported-by: Timo Teras <timo.teras@iki.fi> Signed-off-by: Ron Yorston <rmy@pobox.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2010-06-26ash: fix obscure case of replacing + globbing + backslashesDenys Vlasenko
function old new delta subevalvar 1152 1178 +26 readtoken1 3267 3275 +8 redirect 1284 1286 +2 expandarg 957 958 +1 expdir 4 - -4 evalcommand 1219 1209 -10 expmeta 481 469 -12 ------------------------------------------------------------------------------ (add/remove: 0/1 grow/shrink: 4/2 up/down: 37/-26) Total: 11 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2008-06-23ash: optional support for $'...\t...\n...' bashismDenis Vlasenko
function old new delta readtoken1 2824 3172 +348 static.C_escapes - 18 +18 parse_command 1504 1500 -4 SIT 89 83 -6 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 1/2 up/down: 366/-10) Total: 356 bytes
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