On 14.07.2021 16:57, James Almer wrote:
xmllint (silently) replaces the ' with " when fixing and validating the output
of ffprobe in fate-ffprobe_xsd.

Signed-off-by: James Almer <jamr...@gmail.com>
---
  fftools/ffprobe.c | 6 +++---
  1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/fftools/ffprobe.c b/fftools/ffprobe.c
index 2d452c212e..94c73fd32c 100644
--- a/fftools/ffprobe.c
+++ b/fftools/ffprobe.c
@@ -1682,9 +1682,9 @@ static void xml_print_section_header(WriterContext *wctx)
          wctx->section[wctx->level-1] : NULL;
if (wctx->level == 0) {
-        const char *qual = " xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' 
"
-            "xmlns:ffprobe='http://www.ffmpeg.org/schema/ffprobe' "
-            "xsi:schemaLocation='http://www.ffmpeg.org/schema/ffprobe 
ffprobe.xsd'";
+        const char *qual = " 
xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"; "
+            "xmlns:ffprobe=\"http://www.ffmpeg.org/schema/ffprobe\"; "
+            "xsi:schemaLocation=\"http://www.ffmpeg.org/schema/ffprobe 
ffprobe.xsd\"";
printf("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n");
          printf("<%sffprobe%s>\n",


Both, single and double quotes are technically valid for XML attributes. But I agree that it is better to use double quotes here as they are used for attributes throughout the ffprobe XML writer.

Regards,
Tobias

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