[PATCH] errors: indent "user token number redecl" context

[Theophile Ranquet]

This is the continuation of the work on the readability of errors
context.

For example, what used to be:
  r.y:10.10-22: error: user token number 112 redeclaration for HEX_1
  r.y:9.8-16:   previous declaration for DECIMAL_1

is now:
  r.y:10.10-22: error: user token number 112 redeclaration for HEX_1
  r.y:9.8-16:       previous declaration for DECIMAL_1

* src/symtab.c (user_token_number_redeclaration): Use
complain_at_indent to output with increased indentation level.
* tests/input:at: Apply this change.
---
 src/symtab.c   | 1 +
 tests/input.at | 4 ++--
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/symtab.c b/src/symtab.c
index 2e0b920..56cfe51 100644
--- a/src/symtab.c
+++ b/src/symtab.c
@@ -534,6 +534,7 @@ user_token_number_redeclaration (int num, symbol *first, 
symbol *second)
   complain_at_indent (second->location, &i,
                       _("user token number %d redeclaration for %s"),
                       num, second->tag);
+  i += SUB_INDENT;
   complain_at_indent (first->location, &i,
                       _("previous declaration for %s"),
                       first->tag);
diff --git a/tests/input.at b/tests/input.at
index 50c1050..86a955d 100644
--- a/tests/input.at
+++ b/tests/input.at
@@ -693,9 +693,9 @@ start: DECIMAL_1 HEXADECIMAL_2;
 
 AT_BISON_CHECK([redecl.y], [1], [],
 [[redecl.y:10.10-22: error: user token number 11259375 redeclaration for 
HEXADECIMAL_1
-redecl.y:9.8-16:   previous declaration for DECIMAL_1
+redecl.y:9.8-16:       previous declaration for DECIMAL_1
 redecl.y:12.10-18: error: user token number 16702650 redeclaration for 
DECIMAL_2
-redecl.y:11.10-22: previous declaration for HEXADECIMAL_2
+redecl.y:11.10-22:     previous declaration for HEXADECIMAL_2
 ]])
 
 AT_DATA_GRAMMAR([too-large.y],
-- 
1.7.11.4