Package: tcsh Version: 6.18.01-3 Severity: normal Dear Maintainer,
Expansion of nested aliases usually works as I would expect... .... but not when the nested alias is called from within an if/then/else/endif statement. The problem is demonstrated in the following transcript between the "####" lines. Lines beginning with "##" are my comments added later, and were not typed in to the shell. I have observed the same behavior the versions listed below on Debian systems and also in an old Sun Solaris environment to which I have access: tcsh 6.12.00 on Sun Solaris; tcsh 6.17.02 on Squeeze; tcsh 6.18.01 on Wheezy; tcsh 6.18.01 on Jessie; and tcsh 6.20.00 (compiled by me) on Jessie. I am reporting here because the published upstream reporting channel appears to be out of service. Best regards, --Neil Ormos ############################################################ Script started on Tue Dec 26 10:48:56 2017 > unalias jjj > unalias kkk ## Define kkk, a short alias containing only a ## trivial echo statement. > alias kkk echo 'Trivial echo statement in an alias.' > alias kkk echo Trivial echo statement in an alias. ## Run kkk. > kkk Trivial echo statement in an alias. ## Output was what I expected. ## Run the following series of commands including ## an if/then/else statement. I expect only the ## else part to be executed. The else part ## includes a plain echo statement and an ## invocation of kkk alias, which I expect to be ## be expanded as above: ## ## set xxx=0 ## if ( $xxx ) then ## echo "The then part." ## kkk a ## else ## echo "The else part." ## kkk b ## endif > set xxx=0 > if ( $xxx ) then if? echo "The then part." if? kkk a if? else > echo "The else part." The else part. > kkk b Trivial echo statement in an alias. b > endif ## Output was what I expected. Both the plain echo ## statement and the kkk alias ran, and no error ## message was printed. ## Define jjj, an alias intended to be equivalent ## to the prior series of commands. > alias jjj 'set xxx=0\ ? if ( $xxx ) then\ ? echo "The then part."\ ? kkk a\ ? else\ ? echo "The else part."\ ? kkk b\ ? endif' > alias jjj set xxx=0 if ( $xxx ) then echo "The then part." kkk a else echo "The else part." kkk b endif ## Run jjj. Again, I expect only the else part to be executed. > jjj The else part. endif: Too many arguments. ## The plain echo statement worked correctly. ## However, the invocation of alias kkk did not ## work correctly, and tcsh printed the error ## message "endif: Too many arguments." > exit exit Script done on Tue Dec 26 10:52:02 2017 ############################################################ -- System Information: Debian Release: 8.10 APT prefers oldstable-updates APT policy: (500, 'oldstable-updates'), (500, 'oldstable') Architecture: amd64 (x86_64) Foreign Architectures: i386 Kernel: Linux 3.16.0-4-amd64 (SMP w/8 CPU cores) Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=ANSI_X3.4-1968) (ignored: LC_ALL set to C) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) Versions of packages tcsh depends on: ii libc6 2.19-18+deb8u10 ii libtinfo5 5.9+20140913-1+deb8u2 tcsh recommends no packages. tcsh suggests no packages. -- no debconf information
