lib: textification: saved journal source
Slightly worse on small files, better on large ones.
hledger -f data/100x100x10.journal stats
<<ghc: 39305392 bytes, 77 GCs, 196354/268584 avg/max bytes residency (3 samples), 2M in use, 0.000 INIT (0.007 elapsed), 0.014 MUT (0.027 elapsed), 0.011 GC (0.111 elapsed) :ghc>>
<<ghc: 39307728 bytes, 77 GCs, 196909/270248 avg/max bytes residency (3 samples), 2M in use, 0.001 INIT (0.010 elapsed), 0.015 MUT (0.028 elapsed), 0.012 GC (0.116 elapsed) :ghc>>
hledger -f data/1000x1000x10.journal stats
<<ghc: 314285912 bytes, 612 GCs, 2064811/6597608 avg/max bytes residency (7 samples), 16M in use, 0.000 INIT (0.002 elapsed), 0.126 MUT (0.134 elapsed), 0.059 GC (0.069 elapsed) :ghc>>
<<ghc: 314271368 bytes, 612 GCs, 2070227/6628024 avg/max bytes residency (7 samples), 16M in use, 0.000 INIT (0.000 elapsed), 0.137 MUT (0.143 elapsed), 0.059 GC (0.068 elapsed) :ghc>>
hledger -f data/10000x1000x10.journal stats
<<ghc: 3070033264 bytes, 5965 GCs, 12699294/62962464 avg/max bytes residency (10 samples), 124M in use, 0.000 INIT (0.000 elapsed), 1.245 MUT (1.300 elapsed), 0.498 GC (0.558 elapsed) :ghc>>
<<ghc: 3070006752 bytes, 5973 GCs, 12687314/62848920 avg/max bytes residency (10 samples), 124M in use, 0.000 INIT (0.003 elapsed), 1.257 MUT (1.281 elapsed), 0.496 GC (0.554 elapsed) :ghc>>
hledger -f data/100000x1000x10.journal stats
<<ghc: 30753465088 bytes, 59763 GCs, 117723618/666643528 avg/max bytes residency (14 samples), 1589M in use, 0.000 INIT (0.002 elapsed), 12.536 MUT (12.793 elapsed), 5.978 GC (7.155 elapsed) :ghc>>
<<ghc: 30753367256 bytes, 59811 GCs, 117723236/666627528 avg/max bytes residency (14 samples), 1590M in use, 0.001 INIT (0.012 elapsed), 12.923 MUT (13.169 elapsed), 5.981 GC (6.860 elapsed) :ghc>>
58c3362908