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Add regexp for stack backtrace locations #565

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Jun 21, 2025
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9 changes: 9 additions & 0 deletions rust-compile.el
Original file line number Diff line number Diff line change
Expand Up @@ -28,6 +28,12 @@ See `compilation-error-regexp-alist' for help on their format.")
"Specifications for matching `:::` hints in rustc invocations.
See `compilation-error-regexp-alist' for help on their format.")

(defvar rustc-backtrace-compilation-regexps
(let ((re (concat "^ +at " rustc-compilation-location)))
(cons re '(2 3 4 0 1)))
"Specifications for matching stack backtraces in rustc invocations.
See `compilation-error-regexp-alist' for help on their format.")

(defvar rustc-refs-compilation-regexps
(let ((re "^\\([0-9]+\\)[[:space:]]*|"))
(cons re '(nil 1 nil 0 1)))
Expand Down Expand Up @@ -85,6 +91,9 @@ the compilation window until the top of the error is visible."
(add-to-list 'compilation-error-regexp-alist-alist
(cons 'rustc-colon rustc-colon-compilation-regexps))
(add-to-list 'compilation-error-regexp-alist 'rustc-colon)
(add-to-list 'compilation-error-regexp-alist-alist
(cons 'rustc-backtrace rustc-backtrace-compilation-regexps))
(add-to-list 'compilation-error-regexp-alist 'rustc-backtrace)
(add-to-list 'compilation-error-regexp-alist-alist
(cons 'cargo cargo-compilation-regexps))
(add-to-list 'compilation-error-regexp-alist-alist
Expand Down
7 changes: 5 additions & 2 deletions rust-mode-tests.el
Original file line number Diff line number Diff line change
Expand Up @@ -3694,6 +3694,7 @@ let b = 1;"
(insert " ::: file5.rs:12:34\n\n")
(insert "thread 'main' panicked at src/file7.rs:12:34:\n\n")
(insert "[src/file8.rs:159:5] symbol_value(SOME_VAR) = Some(\n\n")
(insert " at file9.rs:12:34\n\n")
;; should not match
(insert "werror found a -> b\n --> no_match.rs:12:34\n\n")
(insert "error[E0061]: this function takes 1 parameter but 2 parameters were supplied\n --> file6.rs:132:34
Expand All @@ -3714,13 +3715,15 @@ let b = 1;"
((like-previous-one "82" back-to-indentation compilation-info "82")
(like-previous-one "132" back-to-indentation compilation-info "132"))
(("src/file7.rs" "12" "34" nil "src/file7.rs:12:34"))
(("src/file8.rs" "159" "5" compilation-info "src/file8.rs:159:5")))
(("src/file8.rs" "159" "5" compilation-info "src/file8.rs:159:5"))
(("file9.rs" "12" "34" compilation-info "file9.rs:12:34")))
(mapcar #'rust-collect-matches
(list rustc-compilation-regexps
rustc-colon-compilation-regexps
rustc-refs-compilation-regexps
rustc-panics-compilation-regexps
rustc-dbg!-compilation-regexps))))))
rustc-dbg!-compilation-regexps
rustc-backtrace-compilation-regexps))))))

;; If electric-pair-mode is available, load it and run the tests that use it. If not,
;; no error--the tests will be skipped.
Expand Down