Conflict with expected output and prefix replacment when --prefix is /usr

[carnil]

Hi

While preparing the Debian package for the new upstream version 0.12.3 I noticed that the test_cmds.sh testcase fails now.

======================================
   lnav 0.12.3: test/test-suite.log
======================================

# TOTAL: 39
# PASS:  38
# SKIP:  0
# XFAIL: 0
# FAIL:  1
# XPASS: 0
# ERROR: 0

.. contents:: :depth: 2

FAIL: test_cmds.sh
==================
[...]
END   test_cmds.sh_b6a3bb78e9d60e5e1f5ce5b18e40d2f1662707ab.out
OUT: test: ../src/lnav-test -n -c :switch-to-view help {test_dir}/logfile_access_log.0
--- /home/carnil/lnav/lnav-0.12.3/test/expected/test_cmds.sh_b6a3bb78e9d60e5e1f5ce5b18e40d2f1662707ab.out       2024-1
1-20 05:11:07.000000000 +0000
+++ test_cmds.sh_b6a3bb78e9d60e5e1f5ce5b18e40d2f1662707ab.out   2024-11-24 13:23:55.817819636 +0000
@@ -78,7 +78,7 @@
 to write scripts for processing logs with lnav. For example, to get a
 list of IP addresses that dhclient has bound to in CSV format:
 
- ▌#! /usr/bin/lnav -nf                                                                            
+ ▌#! {prefix}/bin/lnav -nf                                                                            
  ▌                                                                                                
  ▌# Usage: dhcp_ip.lnav /var/log/messages                                                         
  ▌# Only include lines that look like:                                                            
FAIL! EXPECTED OUT DIFF
BEGIN test_cmds.sh_b6a3bb78e9d60e5e1f5ce5b18e40d2f1662707ab.err
END   test_cmds.sh_b6a3bb78e9d60e5e1f5ce5b18e40d2f1662707ab.err

The problem happens since 697f256 and 7ee9715 adds replacmenet of -e "s;${prefix};{prefix};g" \. so we end in the TESTS_ENVIRONMENT sanitizing/generalizing too much and replacing the /usr in the help text output as well.

[carnil]

I guess we need to replace similar to as the fixups in 697f256