Make after-change-functions called from call-process get the correct BEG

This fixes bug #39585.

* src/callproc.c (call_process): Supply the correct CHARPOS to
signal_after_change (twice).

1 files changed, 3 insertions, 2 deletions

diff --git a/src/callproc.c b/src/callproc.c
index 07dcc4c3ae4..8883415f3f5 100644
--- a/src/callproc.c
+++ b/src/callproc.c
@@ -811,7 +811,7 @@ call_process (ptrdiff_t nargs, Lisp_Object *args, int filefd,
                    && ! CODING_MAY_REQUIRE_DECODING (&process_coding))
             {
               insert_1_both (buf, nread, nread, 0, 0, 0);
-              signal_after_change (PT, 0, nread);
+              signal_after_change (PT - nread, 0, nread);
             }
           else
             {                   /* We have to decode the input.  */
@@ -854,7 +854,8 @@ call_process (ptrdiff_t nargs, Lisp_Object *args, int filefd,
 
               TEMP_SET_PT_BOTH (PT + process_coding.produced_char,
                                 PT_BYTE + process_coding.produced);
-              signal_after_change (PT, 0, process_coding.produced_char);
+              signal_after_change (PT - process_coding.produced_char,
+                                   0, process_coding.produced_char);
               carryover = process_coding.carryover_bytes;
               if (carryover > 0)
                 memcpy (buf, process_coding.carryover,