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bug#43489: [PATCH] Don't signal scan-error when moving by sexp interacti
From: |
Stefan Monnier |
Subject: |
bug#43489: [PATCH] Don't signal scan-error when moving by sexp interactively |
Date: |
Mon, 28 Sep 2020 13:05:27 -0400 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) |
>>> I disagree Mattias. I think swallowing errors is bad, generally.
>>
>> Agreed, BUT the reason Matthias did it this way is that the error we get
>> currently from `scan-sexp` can't be turned into a good error message
>> without knowing that it was triggered during `forward-sexp`.
>
> I don't understand. The point about not swallowing errors is that we
> don't want to turn them into anything else.
By "turning into" I'm referring to the job of `print-object` done in
the command-loop when it catches an unhandled error.
> I don't see why scan-sexp needs to be changed.
Because the error objects it throws give information that is
difficult/impossible to turn into good error messages. For example,
when doing an up-list, `scan-sexp` may signal the error object:
(scan-error "Unbalanced parentheses" 5010 1)
even tho there is no unbalanced paren in the buffer.
Instead, the error is that we were not within a set of parens when
we started.
Stefan
- bug#43489: [PATCH] Don't signal scan-error when moving by sexp interactively, (continued)
- bug#43489: [PATCH] Don't signal scan-error when moving by sexp interactively, Mattias Engdegård, 2020/09/23
- bug#43489: [PATCH] Don't signal scan-error when moving by sexp interactively, Lars Ingebrigtsen, 2020/09/23
- bug#43489: [PATCH] Don't signal scan-error when moving by sexp interactively, Mattias Engdegård, 2020/09/23
- bug#43489: [PATCH] Don't signal scan-error when moving by sexp interactively, João Távora, 2020/09/23
- bug#43489: [PATCH] Don't signal scan-error when moving by sexp interactively, Mattias Engdegård, 2020/09/23
- bug#43489: [PATCH] Don't signal scan-error when moving by sexp interactively, João Távora, 2020/09/23
- bug#43489: [PATCH] Don't signal scan-error when moving by sexp interactively, Mattias Engdegård, 2020/09/24
- bug#43489: [PATCH] Don't signal scan-error when moving by sexp interactively, João Távora, 2020/09/24
- bug#43489: [PATCH] Don't signal scan-error when moving by sexp interactively, Stefan Monnier, 2020/09/24
- bug#43489: [PATCH] Don't signal scan-error when moving by sexp interactively, João Távora, 2020/09/24
- bug#43489: [PATCH] Don't signal scan-error when moving by sexp interactively,
Stefan Monnier <=
- bug#43489: [PATCH] Don't signal scan-error when moving by sexp interactively, Dmitry Gutov, 2020/09/20
- bug#43489: [PATCH] Don't signal scan-error when moving by sexp interactively, Mattias Engdegård, 2020/09/21
- bug#43489: [PATCH] Don't signal scan-error when moving by sexp interactively, Dmitry Gutov, 2020/09/21
- bug#43489: [PATCH] Don't signal scan-error when moving by sexp interactively, Mattias Engdegård, 2020/09/21
- bug#43489: [PATCH] Don't signal scan-error when moving by sexp interactively, Dmitry Gutov, 2020/09/21
bug#43489: [PATCH] Don't signal scan-error when moving by sexp interactively, João Távora, 2020/09/21