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fe9ca3d328
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Stephen Warren fe9ca3d328 hush: fix some quoted variable expansion issues 
The following shell command fails:

if test -z "$x"; then echo "zero"; else echo "non-zero"; fi

(assuming $x does not exist, it prints "non-zero" rather than "zero").

... since "$x" expands to nothing, and the argument is completely
dropped, causing too few to be passed to -z, causing cmd_test() to
error out early.

This is because when variable expansions are processed by make_string(),
the expanded results are concatenated back into a new string. However,
no quoting is applied when doing so, so any empty variables simply don't
generate any parameter when the combined string is parsed again.

Fix this by explicitly replacing quoting any argument that was originally
quoted when re-generating a string from the already-parsed argument list.

This also fixes loss of whitespace in commands such as:

setenv space " "
setenv var " 1${space}${space} 2 "
echo ">>${var}<<"

Reported-by: Russell King <linux@arm.linux.org.uk>
Acked-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
2014-03-07 10:59:06 -05:00
..
spl common: spl: Add spl sata boot support 2014-02-19 10:47:43 -05:00
bedbug.c Consolidate bool type 2013-04-01 16:33:52 -04:00
board_f.c Merge branch 'master' of git://git.denx.de/u-boot-arm 2014-02-26 16:49:58 -05:00
board_r.c dm: Set up driver model after relocation 2014-03-04 12:15:29 -05:00
bootstage.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
bouncebuf.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_ambapp.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_bdinfo.c arc: bdinfo, image and arc-specific init functions declarations support 2014-02-07 08:14:33 -05:00
cmd_bedbug.c Consolidate bool type 2013-04-01 16:33:52 -04:00
cmd_bmp.c Coding Style cleanup: replace leading SPACEs by TABs 2013-10-14 16:06:54 -04:00
cmd_boot.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_bootldr.c Blackfin: bootldr: use common defines 2011-04-08 00:44:27 -04:00
cmd_bootm.c common: Remove invalid endianess conversion 2014-02-21 11:06:13 -05:00
cmd_bootmenu.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_bootstage.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_cache.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_cbfs.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_clk.c common: Add new clk command 2014-02-04 16:32:20 +01:00
cmd_console.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_cplbinfo.c various cmd_* files: fixed layout a little bit 2010-08-09 01:07:37 +02:00
cmd_cramfs.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_dataflash_mmc_mux.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_date.c Merge branch 'master' of git://git.denx.de/u-boot-i2c 2013-07-24 09:50:24 -04:00
cmd_dcr.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_demo.c dm: Add a demonstration/example driver 2014-03-04 12:15:29 -05:00
cmd_dfu.c usb: new board-specific USB init interface 2013-10-20 23:42:40 +02:00
cmd_diag.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_disk.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_display.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_dtt.c Coding Style cleanup: remove trailing white space 2013-10-14 16:06:53 -04:00
cmd_echo.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_eeprom.c cmd_eeprom: bug fix for i2c read/write 2013-12-05 12:25:01 +01:00
cmd_elf.c Correct vxWorks elf boot to load at correct address 2013-12-13 09:17:32 -05:00
cmd_exit.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_ext2.c Fix number base handling of "load" command 2013-10-07 15:54:18 -04:00
cmd_ext4.c EXT4: Fix number base handling of "ext4write" command 2014-02-19 10:47:36 -05:00
cmd_fat.c Fix number base handling of "load" command 2013-10-07 15:54:18 -04:00
cmd_fdc.c fs/fdos: Remove 2014-02-21 08:42:47 -05:00
cmd_fdos.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_fdt.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_fitupd.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_flash.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_fpga.c fpga: Add support for gzip images with bitstreams 2013-11-06 09:15:12 +01:00
cmd_fpgad.c powerpc/ppc4xx: Convert new gdsys files to SPDX license tags 2013-07-26 15:32:59 -04:00
cmd_fs.c Fix number base handling of "load" command 2013-10-07 15:54:18 -04:00
cmd_fuse.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_gettime.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_gpio.c dm: Enable gpio command to support driver model 2014-03-04 12:15:30 -05:00
cmd_gpt.c cmd/gpt: Support gpt command for all devices 2013-11-08 15:25:12 -05:00
cmd_hash.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_help.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_i2c.c i2c: fix i2c dev command for not using new framework 2013-08-27 05:49:52 +02:00
cmd_ide.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_immap.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_ini.c SPDX-License-Identifier: convert BSD-3-Clause files 2013-08-19 15:45:35 -04:00
cmd_io.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_irq.c Coding Style cleanup: remove trailing white space 2013-10-14 16:06:53 -04:00
cmd_itest.c common, itest: pass u-boot env variables to itest.s 2014-02-21 11:33:19 -05:00
cmd_jffs2.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_ldrinfo.c Blackfin: ldrinfo: new command 2011-04-08 00:44:27 -04:00
cmd_led.c Coding Style cleanup: remove trailing white space 2013-10-14 16:06:53 -04:00
cmd_license.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_load.c Enable xmodem support 2013-08-16 13:45:15 -04:00
cmd_log.c common: Add get_effective_memsize() to memsize.c 2014-02-21 11:06:13 -05:00
cmd_mac.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_md5sum.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_mdio.c net: add support for extended registers to mdio command 2013-11-22 16:50:52 -06:00
cmd_mem.c Add 64-bit data support for memory commands 2014-03-04 12:15:30 -05:00
cmd_mfsl.c common: fsl: Fix broken SPDX-License-Identifier change 2013-10-16 09:24:38 -04:00
cmd_mii.c net: trivial: Fix typos in mii field descriptions 2013-11-22 16:50:04 -06:00
cmd_misc.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_mmc_spi.c Convert cmd_usage() calls in common to use a return value 2012-03-06 21:09:46 +01:00
cmd_mmc.c cmd_mmc.c: Drop open/close mmc sub-commands 2014-02-07 18:17:49 +02:00
cmd_mp.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_mtdparts.c cmd_mtdparts: use 64 bits for flash size, partition size & offset 2013-10-09 12:52:16 -05:00
cmd_nand.c cmd_nand: Do not show usage when scrub is aborted 2013-08-22 17:25:03 -05:00
cmd_net.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_nvedit.c env: fix the env export varname 2013-11-08 15:25:14 -05:00
cmd_onenand.c mtd: resync with Linux-3.7.1 2013-05-31 17:12:03 -05:00
cmd_otp.c blackfin: Add <asm/clock.h> to numerous drivers 2014-02-20 12:00:27 -05:00
cmd_part.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_pci.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_pcmcia.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_portio.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_pxe.c Merge branch 'master' of git://git.denx.de/u-boot-arm 2014-02-26 16:49:58 -05:00
cmd_read.c Add a command to read raw blocks from a partition 2012-12-11 13:17:33 -07:00
cmd_reginfo.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_reiser.c cmd_reiser: normalize 'file not found' errors 2013-11-08 15:25:13 -05:00
cmd_sandbox.c sandbox: block driver using host file/device as backing store 2014-01-08 17:24:03 -07:00
cmd_sata.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_scsi.c common: spl: Add spl sata boot support 2014-02-19 10:47:43 -05:00
cmd_setexpr.c Coding Style cleanup: remove trailing white space 2013-10-14 16:06:53 -04:00
cmd_sf.c sandbox: spi: Adjust 'sf test' to work on sandbox 2014-01-11 12:21:30 +05:30
cmd_sha1sum.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_softswitch.c blackfin: bf609: add softswitch config command 2013-05-13 16:26:12 +08:00
cmd_sound.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_source.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_spi.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_spibootldr.c various cmd_* files: fixed layout a little bit 2010-08-09 01:07:37 +02:00
cmd_spl.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_strings.c Convert cmd_usage() calls in common to use a return value 2012-03-06 21:09:46 +01:00
cmd_terminal.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_test.c cmd_test: implement -e test for file existence 2014-02-19 09:47:34 -05:00
cmd_thordown.c cmd:thor: Support for TIZEN's download command (thordown) 2013-10-20 23:42:41 +02:00
cmd_time.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_tpm.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_trace.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_tsi148.c Coding Style cleanup: remove trailing white space 2013-10-14 16:06:53 -04:00
cmd_ubi.c common, ubi: add ubi check volumename command 2014-02-21 11:33:19 -05:00
cmd_ubifs.c ubifs: fix checkpatch warning 2014-02-21 11:33:19 -05:00
cmd_universe.c Coding Style cleanup: remove trailing white space 2013-10-14 16:06:53 -04:00
cmd_unzip.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_usb_mass_storage.c usb: ums: wait for usb cable connection before enter ums mode 2014-01-13 12:29:12 +01:00
cmd_usb.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_version.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_ximg.c sandbox: Correct compiler warnings in cmd_bootm/cmd_ximg 2013-09-03 13:29:24 -06:00
cmd_yaffs2.c u-boot: Update yaffs2 file system 2012-08-09 23:39:18 +02:00
cmd_zfs.c cmd_zfs: normalize 'file not found' errors 2013-11-08 15:25:13 -05:00
cmd_zip.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
command.c Add 64-bit data support for memory commands 2014-03-04 12:15:30 -05:00
console.c sandbox: Allow the console to work earlier 2014-01-08 17:24:50 -07:00
ddr_spd.c mpc8xxx: DDR2/DDR3: Clean up DIMM-type switch statements 2011-04-04 09:24:43 -05:00
dlmalloc.c Consolidate bool type 2013-04-01 16:33:52 -04:00
dlmalloc.src Consolidate bool type 2013-04-01 16:33:52 -04:00
edid.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
env_attr.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
env_callback.c common, env: optimize boottime 2014-01-14 09:01:06 -05:00
env_common.c Coding Style cleanup: remove trailing white space 2013-10-14 16:06:53 -04:00
env_dataflash.c env: dataflash: fix env_init issue 2013-10-14 16:06:52 -04:00
env_eeprom.c env_eeprom - fix bus recovery for "eeprom_bus_read" 2014-01-13 08:17:27 +01:00
env_embedded.c Coding Style cleanup: remove trailing white space 2013-10-14 16:06:53 -04:00
env_fat.c Coding Style cleanup: remove trailing white space 2013-10-14 16:06:53 -04:00
env_flags.c common, env: optimize boottime 2014-01-14 09:01:06 -05:00
env_flash.c Coding Style cleanup: remove trailing white space 2013-10-14 16:06:53 -04:00
env_mmc.c Coding Style cleanup: remove trailing white space 2013-10-14 16:06:53 -04:00
env_nand.c Coding Style cleanup: remove trailing white space 2013-10-14 16:06:53 -04:00
env_nowhere.c Coding Style cleanup: remove trailing white space 2013-10-14 16:06:53 -04:00
env_nvram.c Coding Style cleanup: remove trailing white space 2013-10-14 16:06:53 -04:00
env_onenand.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
env_remote.c Coding Style cleanup: remove trailing white space 2013-10-14 16:06:53 -04:00
env_sf.c SPL: P2020RDB: fix the problem booting from spi flash 2014-02-24 15:23:19 -08:00
env_ubi.c Coding Style cleanup: remove trailing white space 2013-10-14 16:06:53 -04:00
exports.c Fix SPI build errors in exports.c 2011-12-07 08:41:22 +01:00
fdt_support.c fdt_support.c: Correct linux,initrd-start/end setting 2014-01-20 17:45:33 -05:00
flash.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
hash.c hash.c: Correct non-hash subcommand crc32 addr-save support 2013-11-25 10:41:51 -05:00
hush.c hush: fix some quoted variable expansion issues 2014-03-07 10:59:06 -05:00
hwconfig.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
image-fdt.c fdt: rename IMAAGE_OF_BOARD_SETUP to IMAGE_OF_BOARD_SETUP 2014-02-19 10:47:30 -05:00
image-fit.c cosmetic: FIT: fix a strange comment 2014-02-19 11:10:05 -05:00
image-sig.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
image.c arc: bdinfo, image and arc-specific init functions declarations support 2014-02-07 08:14:33 -05:00
iomux.c Coding Style cleanup: remove trailing white space 2013-10-14 16:06:53 -04:00
kallsyms.c Add support for Linux-like kallsysms 2009-06-12 20:45:48 +02:00
kgdb_stubs.c kgdb: add default generic stubs 2010-01-18 00:23:00 +01:00
kgdb.c Make sure that argv[] argument pointers are not modified. 2010-07-04 23:55:42 +02:00
lcd.c common: lcd.c: fix data abort exception when try to access bmp header 2014-02-03 15:36:14 +09:00
lynxkdi.c checkpatch whitespace cleanups 2011-10-22 01:13:35 +02:00
main.c autoboot: add an option to override keyed autoboot 2013-11-08 15:25:14 -05:00
Makefile dm: Add a demonstration/example driver 2014-03-04 12:15:29 -05:00
memsize.c common: Add get_effective_memsize() to memsize.c 2014-02-21 11:06:13 -05:00
menu.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
miiphyutil.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
modem.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
s_record.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
splash.c video: consolidate splash screen alignment code 2013-07-08 20:21:24 +02:00
stdio.c serial: arm_dcc: Remove stdio structure support 2013-08-13 08:38:29 +02:00
system_map.c Add support for Linux-like kallsysms 2009-06-12 20:45:48 +02:00
update.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
usb_hub.c usb: Use well-known descriptor sizes when parsing configuration 2013-08-26 21:56:34 +02:00
usb_kbd.c console: usb: kbd: To fix slow TFTP booting 2013-08-26 21:56:35 +02:00
usb_storage.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
usb.c usb: add enum usb_init_type parameter to usb_lowlevel_init 2013-10-20 23:45:26 +02:00
xyzModem.c Add eCos-2.0 SPDX-License-Identifier to source files 2013-07-24 09:45:01 -04:00