* bug#48193: Youngsters in charge of emacs vs. basic Bourne shell "for" statement
@ 2021-05-03 14:48 積丹尼 Dan Jacobson
2021-05-03 15:22 ` Gregory Heytings
0 siblings, 1 reply; 6+ messages in thread
From: 積丹尼 Dan Jacobson @ 2021-05-03 14:48 UTC (permalink / raw)
To: 48193
for i do
true
done
: This line and the whole rest of the program misindented because emacs shallow knowlege of shell grammar.
: Test with TAB. Emacs only knows about:
for i
do
true
done
: If this was python, well, you would have to have the language change to accomidate emacs.
: Also if we are colaborating on a big project we cannot just rip up line of other peoples code so
: they are not misindeted for only us.
: Yes, some emacs programmers do not know shell grammar and just assume... indeed the word "do" on the
: first line is not even in a different color. But the word in right here in this line is! Three times!
: Hmmm, [including this part of] the sh language is, maybe 50 years
: old. Not something checkbashisms --extra --force --posix has an issue with. It is part
: of sh, bash, dash, ksh, ...
: I.e., not something invented before emacs...
: What could be even older? Well, sh must have been written in C...
: Yes, I reported this before. But it was closed by programmers who
: do not know basic Bourne shell "for" statement grammar.
: emacs-version "27.1"
Indeed, I was just reading in RISKS Digest,
> https://www.wired.com/story/ai-latest-trick-writing-computer-code/
> What fun -- being second-guessed in real time by software that doesn't
> understand my code...
^ permalink raw reply [flat|nested] 6+ messages in thread
* bug#48193: Youngsters in charge of emacs vs. basic Bourne shell "for" statement
2021-05-03 14:48 bug#48193: Youngsters in charge of emacs vs. basic Bourne shell "for" statement 積丹尼 Dan Jacobson
@ 2021-05-03 15:22 ` Gregory Heytings
2021-05-03 15:27 ` Glenn Morris
2021-05-03 15:38 ` 積丹尼 Dan Jacobson
0 siblings, 2 replies; 6+ messages in thread
From: Gregory Heytings @ 2021-05-03 15:22 UTC (permalink / raw)
To: 積丹尼 Dan Jacobson; +Cc: 48193
>
> for i do
> true
> done
> : This line and the whole rest of the program misindented because emacs shallow knowlege of shell grammar.
>
for i in a b c; do
true
done
# This line and the whole rest of the program correctly indented because Jidanni now knows the shell grammar
^ permalink raw reply [flat|nested] 6+ messages in thread
* bug#48193: Youngsters in charge of emacs vs. basic Bourne shell "for" statement
2021-05-03 15:22 ` Gregory Heytings
@ 2021-05-03 15:27 ` Glenn Morris
2021-05-03 15:38 ` 積丹尼 Dan Jacobson
1 sibling, 0 replies; 6+ messages in thread
From: Glenn Morris @ 2021-05-03 15:27 UTC (permalink / raw)
To: Gregory Heytings; +Cc: 48193
Duplicate of https://debbugs.gnu.org/26217 (a normal report).
No-one need (or should) read jidanni's claptrap.
^ permalink raw reply [flat|nested] 6+ messages in thread
* bug#48193: Youngsters in charge of emacs vs. basic Bourne shell "for" statement
2021-05-03 15:22 ` Gregory Heytings
2021-05-03 15:27 ` Glenn Morris
@ 2021-05-03 15:38 ` 積丹尼 Dan Jacobson
2021-05-03 17:13 ` Gregory Heytings
1 sibling, 1 reply; 6+ messages in thread
From: 積丹尼 Dan Jacobson @ 2021-05-03 15:38 UTC (permalink / raw)
To: Gregory Heytings; +Cc: 48193
$ man bash
SHELL GRAMMAR
for name [ [ in [ word ... ] ] ; ] do list ; done
^ permalink raw reply [flat|nested] 6+ messages in thread
* bug#48193: Youngsters in charge of emacs vs. basic Bourne shell "for" statement
2021-05-03 15:38 ` 積丹尼 Dan Jacobson
@ 2021-05-03 17:13 ` Gregory Heytings
2021-05-04 18:26 ` 積丹尼 Dan Jacobson
0 siblings, 1 reply; 6+ messages in thread
From: Gregory Heytings @ 2021-05-03 17:13 UTC (permalink / raw)
To: 積丹尼 Dan Jacobson; +Cc: 48193
>
> $ man bash
> SHELL GRAMMAR
> for name [ [ in [ word ... ] ] ; ] do list ; done
>
So what? Of course it it's not feasible to embed a complete Bourne shell
interpreter (or for that matter the interpreter of any language) in Emacs
to cope with every possible exotic construct of that language. I note
that
for i
do
true
done
and
for i; do
true
done
are both indented as you expect.
^ permalink raw reply [flat|nested] 6+ messages in thread
* bug#48193: Youngsters in charge of emacs vs. basic Bourne shell "for" statement
2021-05-03 17:13 ` Gregory Heytings
@ 2021-05-04 18:26 ` 積丹尼 Dan Jacobson
0 siblings, 0 replies; 6+ messages in thread
From: 積丹尼 Dan Jacobson @ 2021-05-04 18:26 UTC (permalink / raw)
To: Gregory Heytings; +Cc: 48193
Just like if for some language,
if(1){
bla;
}
was dealt with fine, but
if(1)
{
bla;
}
messed up the parenthesis counter...
^ permalink raw reply [flat|nested] 6+ messages in thread
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2021-05-03 14:48 bug#48193: Youngsters in charge of emacs vs. basic Bourne shell "for" statement 積丹尼 Dan Jacobson
2021-05-03 15:22 ` Gregory Heytings
2021-05-03 15:27 ` Glenn Morris
2021-05-03 15:38 ` 積丹尼 Dan Jacobson
2021-05-03 17:13 ` Gregory Heytings
2021-05-04 18:26 ` 積丹尼 Dan Jacobson
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