diff tests/test-revset.t @ 36685:2a258985ffeb

revsetlang: add a hint for more useful parse errors

This logic is largely based on the similar logic added to template error
messages in D2608 and D2609, but with a few tweaks based on how revsets
actually work.

Differential Revision: https://phab.mercurial-scm.org/D2619

--- a/tests/test-revset.t	Sat Mar 03 11:07:46 2018 -0800
+++ b/tests/test-revset.t	Sat Mar 03 15:31:37 2018 -0800
@@ -399,6 +399,8 @@
   4
   $ log 'date(this is a test)'
   hg: parse error at 10: unexpected token: symbol
+  (date(this is a test)
+             ^ here)
   [255]
   $ log 'date()'
   hg: parse error: date requires a string
@@ -408,6 +410,8 @@
   [255]
   $ log 'date('
   hg: parse error at 5: not a prefix: end
+  (date(
+        ^ here)
   [255]
   $ log 'date("\xy")'
   hg: parse error: invalid \x escape* (glob)
@@ -614,18 +618,28 @@
 
   $ hg debugrevspec '[0]'
   hg: parse error at 0: not a prefix: [
+  ([0]
+   ^ here)
   [255]
   $ hg debugrevspec '.#'
   hg: parse error at 2: not a prefix: end
+  (.#
+     ^ here)
   [255]
   $ hg debugrevspec '#rel'
   hg: parse error at 0: not a prefix: #
+  (#rel
+   ^ here)
   [255]
   $ hg debugrevspec '.#rel[0'
   hg: parse error at 7: unexpected token: end
+  (.#rel[0
+          ^ here)
   [255]
   $ hg debugrevspec '.]'
   hg: parse error at 1: invalid token
+  (.]
+    ^ here)
   [255]
 
   $ hg debugrevspec '.#generations[a]'
@@ -1330,6 +1344,8 @@
   6
   $ try 'grep(r"\")'
   hg: parse error at 7: unterminated string
+  (grep(r"\")
+          ^ here)
   [255]
   $ log 'head()'
   0
@@ -2774,3 +2790,14 @@
 
   $ cd ..
   $ cd repo
+
+test multiline revset with errors
+
+  $ echo > multiline-revset
+  $ echo '. +' >> multiline-revset
+  $ echo '.^ +' >> multiline-revset
+  $ hg log -r "`cat multiline-revset`"
+  hg: parse error at 9: not a prefix: end
+  ( . + .^ +
+            ^ here)
+  [255]