wierd problem with command -LOG_FILE {filename}

[cincinatee]

I am facing some weird problem in command line mode.
this is what I run in a batch file

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@ECHO ON
CloudCompare -AUTO_SAVE ON -o smallA.las -o smallB.las -LOG_FILE smalllaslog.txt

and I get this output in text file as expected

[14:53:26] Auto-save is enabled
[14:53:26] [LOADING]
[14:53:26] Opening file: 'smallA.las'
[14:53:26] [LAS] smallA.las - signature: LASF
[14:53:26] [LAS] Cloud has been recentered! Translation: (-3409533.30,-5478490.66,-296.84)
[14:53:26] [LAS] Color field was all black! We ignored it...
[14:53:26] [LAS] All 'Point Source ID' values were the same (0)! We ignored them...
[14:53:26] [LAS] All 'Flightline Edge' values were the same (0)! We ignored them...
[14:53:26] [LAS] All 'Scan Direction' values were the same (0)! We ignored them...
[14:53:26] [LAS] All 'Return Number' values were the same (0)! We ignored them...
[14:53:26] [LAS] All 'Time' values were the same (0)! We ignored them...
[14:53:26] [LAS] All 'Classification' values were the same (0)! We ignored them...
[14:53:26] [I/O] File 'smallA.las' loaded successfully
[14:53:26] Found one cloud with 26546 points
[14:53:26] [LOADING]
[14:53:26] Opening file: 'smallB.las'
[14:53:26] [LAS] smallB.las - signature: LASF
[14:53:26] [LAS] Cloud has been recentered! Translation: (-3409533.28,-5478490.67,-296.84)
[14:53:26] [LAS] Color field was all black! We ignored it...
[14:53:26] [LAS] All 'Point Source ID' values were the same (0)! We ignored them...
[14:53:26] [LAS] All 'Flightline Edge' values were the same (0)! We ignored them...
[14:53:26] [LAS] All 'Scan Direction' values were the same (0)! We ignored them...
[14:53:26] [LAS] All 'Return Number' values were the same (0)! We ignored them...
[14:53:26] [LAS] All 'Time' values were the same (0)! We ignored them...
[14:53:26] [LAS] All 'Classification' values were the same (0)! We ignored them...
[14:53:26] [I/O] File 'smallB.las' loaded successfully
[14:53:26] Found one cloud with 27228 points
[14:53:26] Processed finished in 0.12 s.

but when I run same command with big clouds(out of which above clouds are segmented),

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@ECHO ON
CloudCompare -AUTO_SAVE ON -o bigA.las -o bigB.las -LOG_FILE biglaslog.txt 

I get log of only last command .i.e -o bigB.las:

[14:52:27] [LAS] All 'Point Source ID' values were the same (0)! We ignored them...
[14:52:27] [LAS] All 'Flightline Edge' values were the same (0)! We ignored them...
[14:52:27] [LAS] All 'Scan Direction' values were the same (0)! We ignored them...
[14:52:27] [LAS] All 'Return Number' values were the same (0)! We ignored them...
[14:52:27] [LAS] All 'Classification' values were the same (0)! We ignored them...
[14:52:27] [I/O] File 'bigB.las' loaded successfully
[14:52:27] Found one cloud with 4712960 points
[14:52:27] Processed finished in 6.40 s.

If I add -C2C_DIST command with big data files,

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@ECHO ON
CloudCompare -AUTO_SAVE ON -o bigA.las -o bigB.las -C2C_DIST -LOG_FILE biglaslog.txt

I get log of C2C_DIST only :

[14:46:49] [I/O] File './bigA_C2C_DIST_2016-11-24_14h46_45.bin' saved successfully
[14:46:49] Processed finished in 39.91 s.

[daniel]

The LOG_FILE command should be the first one as the file is only opened when the command is encountered. Therefore almost all logs issued before this point won't be written in the file (some may still be written because the logs are processed asynchronously).