Merge pull request #11471 from rouault/fix_11470

Do not sort items in IMD metadata domain

autotest/gcore/tiff_read.py

@@ -2127,6 +2127,10 @@ def test_tiff_read_md1():
         md["ACQUISITIONDATETIME"] == "2010-04-01 12:00:00"
     ), "bad value for IMAGERY[ACQUISITIONDATETIME]"
 
+    # Check that IMD metadata domain is not sorted (https://github.com/OSGeo/gdal/issues/11470)
+    md = ds.GetMetadata_List("IMD")
+    assert md[0] == 'version="24.06"'
+
     ds = None
 
     assert not os.path.exists("data/md_dg.tif.aux.xml")

gcore/gdalmultidomainmetadata.cpp

@@ -94,7 +94,11 @@ CPLErr GDALMultiDomainMetadata::SetMetadata(CSLConstList papszMetadata,
     // we want to mark name/value pair domains as being sorted for fast
     // access.
     if (!STARTS_WITH_CI(pszDomain, "xml:") &&
-        !STARTS_WITH_CI(pszDomain, "json:") && !EQUAL(pszDomain, "SUBDATASETS"))
+        !STARTS_WITH_CI(pszDomain, "json:") &&
+        !EQUAL(pszDomain, "SUBDATASETS")
+        // The IMD metadata domain should not be sorted, as order matters
+        // when writing it back. Cf https://github.com/OSGeo/gdal/issues/11470
+        && !EQUAL(pszDomain, "IMD"))
     {
         oMDList.Sort();
     }