Changelog • lobstr

lobstr 1.2.0

CRAN release: 2026-02-18

New src() function for exploring srcref and srcfile objects. We’ve documented all we know about srcrefs in ?src.
obj_size(), obj_addrs(), and sxp() no longer error with “bad binding access” when inspecting environments with non-standard bindings such as those created by for loops or immediate bindings (#48).
sxp(expand = "environment") no longer shows the internal _frame and _hashtab structures. Instead, it now shows promise expressions without forcing them. This change was necessary to make lobstr compliant with R’s public C API.
General progress towards conformance to the public C API of R.

CRAN release: 2025-11-14

Changes for compliance with R’s public API. The main consequence is that lobstr no longer reports the truelength property of vectors.

We also changed the named indicator to refs:n, where n can take the values: 0 (corresponding to NO_REFERENCES returning 1), 1 (corresponding to both NO_REFERENCES MAYBE_SHARED returning 0), and 2+ (MAYBE_SHARED returning 1).

CRAN release: 2022-06-22

Switched to cpp11 from Rcpp.
Relicensed as MIT (#51).
obj_size() and sxp() now support non-nil terminated pairlists.
obj_size() now displays large objects with KB, MB, etc (#57, #60), and no longer returns NA for objects larger than 2^31 bytes (#45).
obj_sizes() now computes relative sizes correctly (without meaningless floating point differences).
ref() lists all contents of environments even those with names beginning with . (@krlmlr, #53).
New, experimental tree() function as alternative to str() (#56).

CRAN release: 2019-07-02

CRAN release: 2019-06-19

ref() now handles custom classes properly (@yutannihilation, #36)
sxp() is a new tool for displaying the underlying C representation of an object (#38).
obj_size() now special cases the ALTREP “deferred string vectors” which previously crashed due to the way in which they abuse the pairlist type (#35).

CRAN release: 2018-12-21