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Subject: bug#48585: 28.0.50;
Missing Edebug instrumentation for some 'if-let' variants
Date: Sat, 22 May 2021 13:37:48 +0200
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Archived-At:
Instrument the following definition using C-u C-M-x:
(defun f (x) (if-let* (x) 1))
Then, evaluate this form:
(f 2)
Edebug will step into 'f', but won't stop at 'x'.
The problem lies in this part of the Edebug specification for 'if-let*':
[&or symbolp (symbolp form) (form)]
The 'symbolp' specification element causes Edebug to not instrument the
'x' symbol. However, the 'symbolp' specification is also necessary
here; we couldn't just replace it with 'form' because that would make
the branches overlap. What we'd need here is something like
[&and symbolp form], i.e. match only in case of a symbol, but also
instrument as a form. IIUC Edebug doesn't support such constructs yet.
In GNU Emacs 28.0.50 (build 125, aarch64-apple-darwin20.4.0, NS appkit-2022.44 Version 11.3.1 (Build 20E241))
of 2021-05-22
Repository revision: 91fa95bde0619b4f3bc7d93d06c7c75998b1588d
Repository branch: master
Windowing system distributor 'Apple', version 10.3.2022
System Description: macOS 11.3.1
Configured using:
'configure --with-modules --without-xml2 --without-pop --with-mailutils
--enable-gcc-warnings=warn-only --enable-checking=all
--enable-check-lisp-object-type 'CFLAGS=-ggdb3 -O0''
Configured features:
ACL GNUTLS JSON LCMS2 MODULES NOTIFY KQUEUE NS PDUMPER PNG THREADS
TOOLKIT_SCROLL_BARS ZLIB
Important settings:
value of $LANG: de_DE.UTF-8
locale-coding-system: utf-8-unix
Major mode: Lisp Interaction
Minor modes in effect:
tooltip-mode: t
global-eldoc-mode: t
eldoc-mode: t
electric-indent-mode: t
mouse-wheel-mode: t
tool-bar-mode: t
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file-name-shadow-mode: t
global-font-lock-mode: t
font-lock-mode: t
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Memory information:
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