Add support for the comma (,) modifier to %f formats in the format() function.

FossilOrigin-Name: 7080e196a1f887640ff51ddc508ec6796ce12874c2944855702753b64a8e5e50

1 files changed, 3 insertions, 0 deletions

diff --git a/src/printf.c b/src/printf.c
index 65e539bef..0cbd4c3c6 100644
--- a/src/printf.c
+++ b/src/printf.c
@@ -649,6 +649,7 @@ void sqlite3_str_vappendf(
         {
           i64 szBufNeeded;           /* Size of a temporary buffer needed */
           szBufNeeded = MAX(e2,0)+(i64)precision+(i64)width+15;
+          if( cThousand ) szBufNeeded += (e2+2)/3;
           if( szBufNeeded > etBUFSIZE ){
             bufpt = zExtra = printfTempBuf(pAccum, szBufNeeded);
             if( bufpt==0 ) return;
@@ -666,10 +667,12 @@ void sqlite3_str_vappendf(
         }else if( msd>0 ){
           for(; e2>=0; e2--){
             *(bufpt++) = et_getdigit_int(&longvalue,&msd);
+            if( cThousand && (e2%3)==0 && e2>1 ) *(bufpt++) = ',';
           }
         }else{
           for(; e2>=0; e2--){
             *(bufpt++) = et_getdigit(&realvalue,&nsd);
+            if( cThousand && (e2%3)==0 && e2>1 ) *(bufpt++) = ',';
           }
         }
         /* The decimal point */