Fix #7704: get_toplevel_path needs normalised argv.(0)

When launched through PATH argv.(0) is just the command name.

eg "coqtop -compile foo.v" -> argv.(0) = "coqtop"

Using executable_name also follows symlinks but this isn't tested to
avoid messing with windows. Running Coq through a symlink is not as
important as PATH anyways.

2 files changed, 13 insertions, 0 deletions

diff --git a/test-suite/misc/7704.sh b/test-suite/misc/7704.sh
new file mode 100755
index 000000000..0ca2c97d2
--- /dev/null
+++ b/test-suite/misc/7704.sh
@@ -0,0 +1,7 @@
+#!/usr/bin/env bash
+
+set -e
+
+export PATH=$BIN:$PATH
+
+${coqtop#"$BIN"} -compile misc/aux7704.v
diff --git a/test-suite/misc/aux7704.v b/test-suite/misc/aux7704.v
new file mode 100644
index 000000000..6fdcf6768
--- /dev/null
+++ b/test-suite/misc/aux7704.v
@@ -0,0 +1,6 @@
+
+Goal True /\ True.
+Proof.
+  split.
+  par:exact I.
+Qed.