On Fri, Jul 10, 2020 at 2:29 PM Jordan Geoghegan <jor...@geoghegan.ca> wrote: > > > > On 2020-07-10 14:15, Magnus Kroken wrote: > > Hi Jordan > > > > On 10.07.2020 22:45, Jordan Geoghegan wrote: > >> Hey folks, > >> > >> Does the 'tr' utility support character classes in OpenWRT? I was > >> playing around with an OpenWRT x86_64 VM and I noticed that 'tr' > >> doesn't seem to support character classes. > >> The command " echo HELLO | tr '[:upper:]' '[:lower:]' " does not > >> convert to the text to lowercase as it should (and as required by > >> POSIX). > > This would be expected behavior. OpenWrt disables tr character classes > > in BusyBox by default, see [1]: > > > > config BUSYBOX_DEFAULT_FEATURE_TR_CLASSES > > bool > > default n > > config BUSYBOX_DEFAULT_FEATURE_TR_EQUIV > > bool > > default n > > > > I don't know what the size cost in the BusyBox binary is, but that > > will likely be the deciding factor for such a change. > > > > 1: > > https://git.openwrt.org/?p=openwrt/openwrt.git;a=blob;f=package/utils/busybox/Config-defaults.in > > > > Regards, > > Magnus Kroken > > Hi Magnus, > > Thanks for confirming that so quickly. > > I obviously understand that space saving is essential to OpenWRT, but > POSIX does require[1] that 'tr' support character classes: awk '{print toupper($0)}' is an alternative. > > :class: > Represents all characters belonging to the defined character > class, as defined by the current setting of the LC_CTYPE locale cate- > gory. The following character class names shall be accepted > when specified in string1: > > alnum blank digit lower punct upper > alpha cntrl graph print space xdigit > > > 1: https://www.unix.com/man-page/posix/1posix/tr/ > > > Regards, > Jordan > > > _______________________________________________ > openwrt-devel mailing list > openwrt-devel@lists.openwrt.org > https://lists.openwrt.org/mailman/listinfo/openwrt-devel
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