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2018-04-06hush: fix "unset PS1/PS2", and put them into initial variable setDenys Vlasenko
"unset PS1/PS2" causes prompts to be empty strings function old new delta hush_main 1031 1089 +58 goto_new_line 27 33 +6 fgetc_interactive 244 245 +1 unset_local_var 155 149 -6 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 3/1 up/down: 65/-6) Total: 59 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-04-06hush: if we did match "LINENO" or "OPTIND", stop further comparisonsDenys Vlasenko
function old new delta handle_changed_special_names 99 101 +2 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-04-06hush: consolidate handling of setting/unsetting of PSn, LINENO, OPTINDDenys Vlasenko
function old new delta handle_changed_special_names - 99 +99 unset_local_var 256 155 -101 set_local_var 557 437 -120 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 0/2 up/down: 99/-221) Total: -122 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-04-05hush: update to correctly handle changed var_bash[346].testsDenys Vlasenko
function old new delta expand_one_var 1612 1604 -8 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-04-05hush: implement "hush -s"Denys Vlasenko
function old new delta hush_main 1015 1031 +16 packed_usage 32757 32745 -12 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 1/1 up/down: 16/-12) Total: 4 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-04-05hush: fix a few more corner cases with empty-expanding `cmds`Denys Vlasenko
See added testcases function old new delta run_pipe 1723 1784 +61 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-04-05hush: fix corner cases with exec in empty expansionsDenys Vlasenko
Cases like these: var=val exec >redir var=val `` >redir function old new delta run_pipe 1701 1723 +22 redirect_and_varexp_helper 56 55 -1 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 1/1 up/down: 22/-1) Total: 21 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-04-05hush: less mind-bending set_vars_and_save_old()Denys Vlasenko
function old new delta run_pipe 1651 1701 +50 set_local_var 510 557 +47 pseudo_exec_argv 544 581 +37 redirect_and_varexp_helper 64 56 -8 set_vars_and_save_old 164 149 -15 unset_local_var 274 256 -18 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 3/3 up/down: 134/-41) Total: 93 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-04-05hush: "no logic changes" in last commit was not true, fix it upDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-04-05hush: make run_pipe code simpler to understand, no logic changesDenys Vlasenko
function old new delta run_pipe 1641 1651 +10 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-04-05hush: fix a bug where we don't properly handle f() { a=A; b=B; }; a= fDenys Vlasenko
function old new delta unset_local_var 20 274 +254 leave_var_nest_level - 98 +98 set_vars_and_save_old 128 164 +36 enter_var_nest_level - 32 +32 builtin_local 46 50 +4 pseudo_exec_argv 554 544 -10 redirect_and_varexp_helper 77 64 -13 run_pipe 1890 1641 -249 unset_local_var_len 267 - -267 ------------------------------------------------------------------------------ (add/remove: 2/1 grow/shrink: 3/3 up/down: 424/-539) Total: -115 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-04-04hush: make var nesting code independent of "local" supportDenys Vlasenko
Also, add code to abort at ~65000 function recursion depth. SEGVing is not as nice as exiting with a message (and restoring termios!): $ f() { echo -n .; f; }; f ....<many dots later>....hush: fatal recursion (depth 65281) function old new delta run_pipe 1826 1890 +64 pseudo_exec_argv 544 554 +10 parse_and_run_file 71 80 +9 i_getch 104 107 +3 done_command 99 102 +3 set_local_var 508 510 +2 helper_export_local 214 215 +1 builtin_local 49 46 -3 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 7/1 up/down: 92/-3) Total: 89 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-04-04hush: fix for readonly vars in "ro=A ro=B cmd" caseDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-04-03hush: support "f() (cmd)" functionsDenys Vlasenko
Many other shells support this construct function old new delta parse_stream 2950 3018 +68 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-04-03hush: fix mishandling of "true | f() { echo QWE; }"Denys Vlasenko
function old new delta run_pipe 1820 1826 +6 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-04-03hush: fix "set -e; false || x=1; echo OK"Denys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-04-03hush: one-word, no-globbing handling of local/export/readonly argsDenys Vlasenko
function old new delta done_word 738 790 +52 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>
2018-04-02hush: remove stray debugging printoutDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-04-01hush: update information comment about heredoc discrepancyDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-04-01libbb: new function bb_die_memory_exhaustedDenys Vlasenko
function old new delta bb_die_memory_exhausted - 10 +10 xstrdup 28 23 -5 xsetenv 27 22 -5 xrealloc 32 27 -5 xputenv 22 17 -5 xmalloc 30 25 -5 xfdopen_helper 40 35 -5 xasprintf 44 39 -5 wget_main 2387 2382 -5 open_socket 54 49 -5 glob_brace 419 414 -5 bb_get_chunk_from_file 146 141 -5 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 0/11 up/down: 10/-55) Total: -45 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-04-01hush: add a comment where we differ from bash wrt heredoc EOF mark handlingDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-04-01ash,hush: handle a few more bkslash-newline casesDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-03-31hush: fix heredoc_bkslash_newline1.tests failureDenys Vlasenko
function old new delta parse_stream 2787 2827 +40 builtin_type 117 115 -2 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-03-31hush: fix a signedness bugDenys Vlasenko
Testcase: set -- a ""; space=" "; printf "<%s>\n" "$@"$space Before: <a > After: <a> <> It usually does not bite since bbox forces -funsigned-char build. Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-03-28hush: add a FIXME commentDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-03-28ash,hush: fix "saved" redirected fds still visible in childrenDenys Vlasenko
Based on a patch by Mark Marshall <mark.marshall@omicronenergy.com> function old new delta dup_CLOEXEC - 49 +49 fcntl_F_DUPFD 46 - -46 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-03-06hush: code shrinkDenys Vlasenko
function old new delta run_pipe 1589 1591 +2 pseudo_exec_argv 374 375 +1 builtin_type 114 115 +1 find_function 8 - -8 ------------------------------------------------------------------------------ (add/remove: 0/1 grow/shrink: 3/0 up/down: 4/-8) Total: -4 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-03-02hush: fix a='a\\'; echo "${a%\\\\}"Denys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-03-02shell: tweak bkslash_in_varexp.tests, add bkslash_in_varexp1.testsDenys Vlasenko
It turns out bkslash_in_varexp.tests was a bash bug :] ash and hush fail "corrected" bkslash_in_varexp.tests as well, just not as badly as I thought (hush gets half of the cases right). Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-02-13hush: simplify process_command_subs()Denys Vlasenko
Incidentally, this fixes LINENO bug here: echo "1:${LINENO}" echo "2:`echo; echo`" # was counting lines in the `cmd` output as LINENO++ echo "3:${LINENO}" function old new delta parse_and_run_file 53 71 +18 expand_vars_to_list 1187 1164 -23 setup_file_in_str 25 - -25 ------------------------------------------------------------------------------ (add/remove: 0/1 grow/shrink: 1/1 up/down: 18/-48) Total: -30 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-02-08hush: probably fixing a bug in last LINENO fixDenys Vlasenko
I don't have an example of mishandled script, but the logic looked wrong: it could sometimes treat newlines as if they are spaces. function old new delta parse_stream 2788 2787 -1 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-02-08hush: LINENO fixDenys Vlasenko
Script triggering the bug: t=0 echo "at line ${LINENO}" while [ ${t} -lt 10 ]; do echo "at line ${LINENO}" # LINENO was 3 instead of 4 here t=$((t+1)) done function old new delta parse_stream 2754 2788 +34 done_word 711 738 +27 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 2/0 up/down: 61/0) Total: 61 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-01-30hush: protect against self-modifying trap codeDenys Vlasenko
function old new delta check_and_run_traps 211 236 +25 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-01-27hush: add HUSH_BASH_SOURCE_CURDIR config option, to be on par with ashDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-01-27hush: fix dot builtin to not search current directoryDenys Vlasenko
function old new delta builtin_source 182 209 +27 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-01-25hush: fix two corner cases in ${v/pattern/repl}. Closes 10686Denys Vlasenko
function old new delta expand_one_var 1592 1618 +26 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-01-25hush: fix handling of $_ (so far it's an ordinary variable, no special meaning)Denys Vlasenko
function old new delta parse_dollar 820 779 -41 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-01-19hush: fix a case where EXIT trap may modify its code mid-flightDenys Vlasenko
function old new delta hush_exit 93 99 +6 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-01-19hush: fix build if !BASH_LINENO_VARDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-01-19hush: implement $LINENO bashismDenys Vlasenko
function old new delta run_pipe 1697 1774 +77 unset_local_var_len 258 301 +43 hush_main 1009 1051 +42 set_local_var 516 554 +38 parse_and_run_file 42 75 +33 i_getch 96 116 +20 .rodata 18858 18876 +18 done_command 106 122 +16 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 8/0 up/down: 287/0) Total: 287 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-01-13hush: fix raw ^C handlisg in single-quoted stringsDenys Vlasenko
function old new delta parse_stream 2719 2754 +35 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-01-12hush: tweak command -vV printing code, no logic changesDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-01-12hush: implement "command -v -V"Denys Vlasenko
function old new delta pseudo_exec_argv 231 374 +143 if_command_vV_print_and_exit - 127 +127 builtin_set 267 273 +6 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 2/0 up/down: 276/0) Total: 276 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-01-11hush: implement "command" builtin (no options are supported yet)Denys Vlasenko
function old new delta pseudo_exec_argv 194 231 +37 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-01-11hush: fix handling of ^C in evalDenys Vlasenko
function old new delta run_list 1044 1259 +215 builtin_eval 45 126 +81 expand_strvec_to_string 91 - -91 ------------------------------------------------------------------------------ (add/remove: 0/1 grow/shrink: 2/0 up/down: 296/-91) Total: 205 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-01-11hush: fix handling of raw ^C in scripts: "echo ^C"Denys Vlasenko
function old new delta expand_vars_to_list 1133 1187 +54 parse_stream 2690 2719 +29 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-01-11hush: remove dead codeDenys Vlasenko
function old new delta done_word 761 711 -50 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-12-31randomconfig fixesDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-10-22hush: fix comment parsing in `cmd`, closes 10421Denys Vlasenko
function old new delta parse_stream 2692 2690 -2 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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