diff --git a/hledger/test/errors/README.md b/hledger/test/errors/README.md
index d49833cca..10f3e872f 100644
--- a/hledger/test/errors/README.md
+++ b/hledger/test/errors/README.md
@@ -20,18 +20,19 @@ highlighting, not to mention LSP support, for all of our journal
 errors is a big project, but it's crowd-sourceable and any progress
 brings immediate practical benefits. Here is the approximate current status:
 
-|                   | consistent | accurate line | accurate column | flycheck detects | flycheck region |
-|-------------------|------------|---------------|-----------------|------------------|-----------------|
-| parseable         |            |               |                 | Y                |                 |
-| parseable-dates   |            |               |                 | Y                |                 |
-| parseable-regexps |            |               |                 | Y                |                 |
-| balanced          |            |               |                 | Y                |                 |
-| assertions        |            |               |                 | Y                |                 |
-| accounts          |            |               |                 | Y                |                 |
-| commodities       |            |               |                 | Y                |                 |
-| payees            |            |               |                 | Y                |                 |
-| ordereddates      |            |               |                 | Y                |                 |
-| uniqueleafnames   |            |               |                 | Y                |                 |
+|                          | consistent | accurate line | accurate column | flycheck detects | flycheck region |
+|--------------------------|------------|---------------|-----------------|------------------|-----------------|
+| parseable                |            |               |                 | Y                |                 |
+| parseable-dates          |            |               |                 | Y                |                 |
+| parseable-regexps        |            |               |                 | Y                |                 |
+| balanced                 |            |               |                 | Y                |                 |
+| balancednoautoconversion |            |               |                 | Y                |                 |
+| assertions               |            |               |                 | Y                |                 |
+| accounts                 |            |               |                 | Y                |                 |
+| commodities              |            |               |                 | Y                |                 |
+| payees                   |            |               |                 | Y                |                 |
+| ordereddates             |            |               |                 | Y                |                 |
+| uniqueleafnames          |            |               |                 | Y                |                 |
 
 Key:
 - consistent: the error message follows a consistent format
@@ -39,3 +40,134 @@ Key:
 - accurate column - the optimal column(s) is(are) selected
 - flycheck detects - flycheck recognises the error output, reports the error and doesn't give a "suspicious" warning
 - flycheck shows region - flycheck highlights the text region containing the error
+
+## Current journal errors
+
+<!-- to update: erase the below then C-u M-! ./showall -->
+hledger 1.25.99-ge6bf04fce-20220316 error messages, last updated 2022-03-18:
+
+### parseable
+```
+hledger: /Users/simon/src/hledger/hledger/test/errors/./parseable.j:3:2:
+  |
+3 | 1
+  |  ^
+unexpected newline
+expecting date separator or digit
+
+```
+
+### parseable-dates
+```
+hledger: /Users/simon/src/hledger/hledger/test/errors/./parseable-dates.j:3:1:
+  |
+3 | 2022/1/32
+  | ^^^^^^^^^
+well-formed but invalid date: 2022/1/32
+
+```
+
+### parseable-regexps
+```
+hledger: /Users/simon/src/hledger/hledger/test/errors/./parseable-regexps.j:3:8:
+  |
+3 | alias /(/ = a
+  |        ^
+this regular expression could not be compiled: (
+
+```
+
+### balanced
+```
+hledger: /Users/simon/src/hledger/hledger/test/errors/./balanced.j:3-4
+could not balance this transaction:
+real postings' sum should be 0 but is: 1
+2022-01-01
+    a               1
+
+```
+
+### balancednoautoconversion
+```
+hledger: /Users/simon/src/hledger/hledger/test/errors/./balancednoautoconversion.j:6-8
+could not balance this transaction:
+real postings' sum should be 0 but is:  1 A
+-1 B
+2022-01-01
+    a             1 A
+    b            -1 B
+
+```
+
+### assertions
+```
+hledger: balance assertion: /Users/simon/src/hledger/hledger/test/errors/./assertions.j:4:8
+transaction:
+2022-01-01
+    a               0 = 1
+
+assertion details:
+date:       2022-01-01
+account:    a
+commodity:  
+calculated: 0
+asserted:   1
+difference: 1
+
+```
+
+### accounts
+```
+Error: undeclared account "a"
+in transaction at: /Users/simon/src/hledger/hledger/test/errors/./accounts.j:3-4
+
+  2022-01-01
+      (a)               1
+
+```
+
+### commodities
+```
+Error: undeclared commodity "A"
+in transaction at: /Users/simon/src/hledger/hledger/test/errors/./commodities.j:5-6
+
+  2022-01-01
+      (a)             A 1
+
+```
+
+### payees
+```
+Error: undeclared payee "p"
+at: /Users/simon/src/hledger/hledger/test/errors/./payees.j:6-7
+
+> 2022-01-01 p
+      (a)             A 1
+
+```
+
+### ordereddates
+```
+Error: transaction date is out of order
+at /Users/simon/src/hledger/hledger/test/errors/./ordereddates.j:10-11:
+
+  2022-01-02 p
+      (a)               1
+  
+> 2022-01-01 p
+      (a)               1
+  
+
+```
+
+### uniqueleafnames
+```
+Error: account leaf names are not unique
+leaf name "c" appears in account names: "a:c", "b:c"
+seen in "a:c" in transaction at: /Users/simon/src/hledger/hledger/test/errors/./uniqueleafnames.j:8-9
+
+> 2022-01-01 p
+>     (a:c)               1
+
+```
+
diff --git a/hledger/test/errors/showall b/hledger/test/errors/showall
index ea789cba8..aa619a12b 100755
--- a/hledger/test/errors/showall
+++ b/hledger/test/errors/showall
@@ -1,4 +1,28 @@
 #!/usr/bin/env sh
-# execute all journals, showing their error message
+# Execute all test journals, showing their error messages
+# (as README-ready markdown).
 
-for f in *.j; do echo $f:; ./$f || true; done
+# All test journals in this directory, in preferred test/display order
+testfiles="\
+  parseable.j \
+  parseable-dates.j \
+  parseable-regexps.j \
+  balanced.j \
+  balancednoautoconversion.j \
+  assertions.j \
+  accounts.j \
+  commodities.j \
+  payees.j \
+  ordereddates.j \
+  uniqueleafnames.j \
+  "
+
+printf '%s error messages, last updated %s:\n\n' \
+       "$(hledger --version | cut -d, -f1)" \
+       "$(date +%Y-%m-%d)"
+
+for f in $testfiles; do
+    printf '### %s\n```\n' "$(echo "$f" | cut -d. -f1)"
+    ./"$f" || true
+    printf '```\n\n'
+done