gnucash stable: Multiple changes pushed

[John Ralls]

Updated	 via  https://github.com/Gnucash/gnucash/commit/3cf1352c (commit)
	 via  https://github.com/Gnucash/gnucash/commit/0dc41c12 (commit)
	from  https://github.com/Gnucash/gnucash/commit/fbcb9f5e (commit)



commit 3cf1352cbb2aa8405bbd6df38c047bf3cee9f938
Merge: fbcb9f5e75 0dc41c1212
Author: John Ralls <jralls at ceridwen.us>
Date:   Fri Sep 25 16:10:42 2026 -0700

    Merge Noah Noerr's 'python-guard-price-set-source-string' into stable.

commit 0dc41c1212028c163c3717235c182fe34d08ed4c
Author: Noerr <Noerr at users.noreply.github.com>
Date:   Wed Sep 23 02:06:17 2026 -0700

    [bindings/python] Deprecate set_source_string; remove it from the Guile bindings
    
    gnc_price_set_source_string maps a source string to the PriceSource enum and
    silently leaves the source unchanged for anything it doesn't recognize -- a
    silent no-op a naive Python or Guile script can hit. Steer callers to
    set_source() with a PriceSource member (added in #2317) instead.
    
    Python bindings:
    - Deprecate GncPrice.set_source_string(): it now emits a DeprecationWarning
      pointing at set_source(PriceSource.<...>). It still works during the
      deprecation period and still guards -- if the string is not recognized (the
      round-tripped source no longer equals the input) it raises ValueError rather
      than silently doing nothing.
    - Fix the deprecated() decorator in deprecation.py: it referenced the undefined
      DeprecationWarnig and inspect.current_frame(), so it raised instead of
      warning (the one existing @deprecated use was latently broken).
    
    Guile bindings:
    - mark gnc-price-set-source-string deprecated in engine.i.
      (Python and Guile use separate SWIG interface files, so Python is
      handled separately). The only in-tree Guile caller is the QIF importer, updated to
      gnc-price-set-source with PRICE-SOURCE-USER-PRICE; the redundant
      set-source-string in test-engine-extras.scm's fixture helper is dropped.
    
    Tests (test_price_and_wrapping.py):
    - TestSetSourceStringGuard covers the guard (still raises on an unrecognized
      string) and the new DeprecationWarning.
    
    Removing set_source_string from the Python bindings is a follow-up.



Summary of changes:
 bindings/engine.i                                |  9 +++++
 bindings/guile/test/test-engine-extras.scm       |  1 -
 bindings/python/deprecation.py                   |  6 +--
 bindings/python/gnucash_core.py                  | 33 ++++++++++++++---
 bindings/python/tests/test_price_and_wrapping.py | 47 ++++++++++++++++++++++++
 gnucash/import-export/qif-imp/qif-to-gnc.scm     |  2 +-
 6 files changed, 87 insertions(+), 11 deletions(-)