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Re: "Variation" in Command Substitution Behaviour


From: Andreas Schwab
Subject: Re: "Variation" in Command Substitution Behaviour
Date: Tue, 28 Feb 2017 11:00:53 +0100
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/25.2 (gnu/linux)

On Feb 28 2017, Geoff Hull <address@hidden> wrote:

> If I "source" the attached file (i.e. ". test_aliases") in a bash session,
> then run the following:
>
> assemble_fam1
> assemble_fam2
> say_families
>
> I see the following output:
>
> Flintstones=wilma:bam-bam:fred
> Rubbles=barney

It seems like the shell is eating an extra newline.  Try typing an empty
line after assemble_fam2:

$ set -x
$ assemble_fam1
+ fred
++ echo fred
+ FSTONES=fred
+ FSTONES=wilma:bam-bam:fred
$ assemble_fam2
+ barney
++ echo barney
+ RUBBLES=barney
$ 
+ RUBBLES=betty:pebbles:barney
$ say_families
+ say_families
+ echo Flintstones=wilma:bam-bam:fred
Flintstones=wilma:bam-bam:fred
+ echo Rubbles=betty:pebbles:barney
Rubbles=betty:pebbles:barney

Andreas.

-- 
Andreas Schwab, address@hidden
GPG Key fingerprint = 58CA 54C7 6D53 942B 1756  01D3 44D5 214B 8276 4ED5
"And now for something completely different."



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