cfgdoc-gen: Handle empty lines in comments

documentation/en/default-lotus-config.toml

@@ -15,6 +15,9 @@
 
 
 [Backup]
+  # When set to true disables metadata log (.lotus/kvlog). This can save disk
+  # space by reducing metadata redundancy.
+  # 
   # Note that in case of metadata corruption it might be much harder to recover
   # your node if metadata log is disabled
   #

documentation/en/default-lotus-miner-config.toml

@@ -15,6 +15,9 @@
 
 
 [Backup]
+  # When set to true disables metadata log (.lotus/kvlog). This can save disk
+  # space by reducing metadata redundancy.
+  # 
   # Note that in case of metadata corruption it might be much harder to recover
   # your node if metadata log is disabled
   #
@@ -309,28 +312,69 @@
 
 
 [Proving]
+  # Maximum number of sector checks to run in parallel. (0 = unlimited)
+  # 
   # WARNING: Setting this value too high may make the node crash by running out of stack
   # WARNING: Setting this value too low may make sector challenge reading much slower, resulting in failed PoSt due
   # to late submission.
+  # 
+  # After changing this option, confirm that the new value works in your setup by invoking
+  # 'lotus-miner proving compute window-post 0'
   #
   # type: int
   # env var: LOTUS_PROVING_PARALLELCHECKLIMIT
   #ParallelCheckLimit = 128
 
+  # Disable Window PoSt computation on the lotus-miner process even if no window PoSt workers are present.
+  # 
   # WARNING: If no windowPoSt workers are connected, window PoSt WILL FAIL resulting in faulty sectors which will need
   # to be recovered. Before enabling this option, make sure your PoSt workers work correctly.
+  # 
+  # After changing this option, confirm that the new value works in your setup by invoking
+  # 'lotus-miner proving compute window-post 0'
   #
   # type: bool
   # env var: LOTUS_PROVING_DISABLEBUILTINWINDOWPOST
   #DisableBuiltinWindowPoSt = false
 
+  # Disable Winning PoSt computation on the lotus-miner process even if no winning PoSt workers are present.
+  # 
   # WARNING: If no WinningPoSt workers are connected, Winning PoSt WILL FAIL resulting in lost block rewards.
   # Before enabling this option, make sure your PoSt workers work correctly.
   #
   # type: bool
   # env var: LOTUS_PROVING_DISABLEBUILTINWINNINGPOST
   #DisableBuiltinWinningPoSt = false
 
+  # Disable WindowPoSt provable sector readability checks.
+  # 
+  # In normal operation, when preparing to compute WindowPoSt, lotus-miner will perform a round of reading challenges
+  # from all sectors to confirm that those sectors can be proven. Challenges read in this process are discarded, as
+  # we're only interested in checkdng that sector data can be read.
+  # 
+  # When using builtin proof computation (no PoSt workers, and DisableBuiltinWindowPoSt is set to false), this process
+  # can save a lot of time and compute resources in the case that some sectors are not readable - this is caused by
+  # the builtin logic not skipping snark computation when some sectors need to be skipped.
+  # 
+  # When using PoSt workers, this process is mostly redundant, with PoSt workers challenges will be read once, and
+  # if challenges for some sectors aren't readable, those sectors will just get skipped.
+  # 
+  # Disabling sector pre-checks will slightly requice IO load when proving sectors, possibly resulting in shorter
+  # time to produce window PoSt. In setups with good IO capabilities the effect of this option on proving time should
+  # be negligible.
+  # 
+  # NOTE: It likely is a bad idea to disable sector pre-checks in setups with no PoSt workers.
+  # 
+  # NOTE: Even when this option is enabled, recovering sectors will be checked before recovery declaration message is
+  # sent to the chain
+  # 
+  # After changing this option, confirm that the new value works in your setup by invoking
+  # 'lotus-miner proving compute window-post 0'
+  #
+  # type: bool
+  # env var: LOTUS_PROVING_DISABLEWDPOSTPRECHECKS
+  #DisableWDPoStPreChecks = false
+
 
 [Sealing]
   # Upper bound on how many sectors can be waiting for more deals to be packed in it before it begins sealing at any given time.

node/config/cfgdocgen/gen.go

@@ -53,7 +53,7 @@ func run() error {
 				continue
 			}
 		case stType:
-			if strings.HasPrefix(line, "// ") {
+			if strings.HasPrefix(line, "//") {
 				cline := strings.TrimSpace(strings.TrimPrefix(line, "//"))
 				currentComment = append(currentComment, cline)
 				continue