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Fri, 17 May 2024 08:40:33 -0700 (PDT) MIME-Version: 1.0 References: <9b97bc99-1d92-46f1-8841-c757d1dcee68@eastlink.ca> <09115b25-9017-4233-aaf2-6e4378aba53f@eastlink.ca> In-Reply-To: <09115b25-9017-4233-aaf2-6e4378aba53f@eastlink.ca> From: "Mark J. Reed" Date: Fri, 17 May 2024 11:40:21 -0400 Message-ID: Subject: Re: exit to shell from nested function calls. To: Ray Andrews Cc: zsh-users@zsh.org Content-Type: multipart/alternative; boundary="00000000000019b7ff0618a82c14" X-Seq: 29939 Archived-At: X-Loop: zsh-users@zsh.org Errors-To: zsh-users-owner@zsh.org Precedence: list Precedence: bulk Sender: zsh-users-request@zsh.org X-no-archive: yes List-Id: List-Help: , List-Subscribe: , List-Unsubscribe: , List-Post: List-Owner: List-Archive: --00000000000019b7ff0618a82c14 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Functions are great, and I recommend using them - just use them _inside_ the script. For anything but the most trivial scripts I make the main body of the script a function, too, something like this: #!/usr/bin/env zsh main() { main program code here } sub1() { called by main } sub2() { called by main or sub1 } .. ... other declarations ... ... main "$@" Only define functions inside your interactive shell when they need to make changes that persist after they exit - like changing directories, or updating variable values, etc. On Thu, May 16, 2024 at 5:30=E2=80=AFPM Ray Andrews wrote: > > > On 2024-05-16 13:26, Roman Perepelitsa wrote: > > I'd turn this into a script (executable file) and use exit to bail > > out. IMO, anything that can be a script is better off as a script. > > I'm slowly figuring that out. Yes, that's the motivator I need. Coming > from C I just sorta started writing functions cuz that's what one does in= C. > > Thanks Roman. > > BTW, just in case you're wondering, it's an overlay for mostly firefox > which chatters to the disk almost constantly. Got a newer machine > recently and it has a SSD, but I know they have limited R/W cycles so I'm > using the overlay to deflect the chatter to RAM. Works good so far. Wil= l > try it with a few other progs too, and possibly /var. It 's interesting > watching 'fatrace -fW' for a while -- see who's a disk blabbermouth. > > > > --=20 Mark J. Reed --00000000000019b7ff0618a82c14 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Functions are great, and I recommend using them - just use= them _inside_ the script. For anything but the most trivial scripts I make= the main body of the script a function, too, something like this:

=
= #!/usr/bin/env zsh
main() {
=C2=A0 =C2=A0= main program code here
}<= /div>

sub1() {
=C2=A0 =C2=A0 cal= led by main
}

sub2(= ) {
=C2=A0 =C2=A0 called by main = or sub1
}
..
... other d= eclarations ...
...
<= div>main "$@"
<= div>=C2=A0
Only define functions inside your interactive shell wh= en they need to make changes that persist after they exit - like changing d= irectories, or updating variable values, etc.

On Thu, M= ay 16, 2024 at 5:30=E2=80=AFPM Ray Andrews <rayandrews@eastlink.ca> wrote:
=20 =20 =20


On 2024-05-16 13:26, Roman Perepelitsa wrote:
I'd = turn this into a script (executable file) and use exit to bail 
out. IMO, anything that can be a script is better off as a scrip=
t.
I'm slowly figuring that out.=C2=A0 Yes, that's the motivator I= need.=C2=A0 Coming from C I just sorta started writing functions cuz that's wha= t one does in C.

Thanks Roman.=C2=A0

BTW, just in case you're wondering, it's an overlay for mostly firefox which chatters to the disk almost constantly.=C2=A0 Got=C2=A0 a= newer machine recently and it has a SSD, but I know they have limited R/W cycles so I'm using the overlay to deflect the chatter to RAM.=C2= =A0 Works good so far.=C2=A0 Will try it with a few other progs too, and possibly /var.=C2=A0 It 's interesting watching 'fatrace -fW= 9; for a while -- see who's a disk blabbermouth.=C2=A0





--
Ma= rk J. Reed <mar= kjreed@gmail.com>
--00000000000019b7ff0618a82c14--