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1Repair Windows errors before they cause bigger problems2Fix the driver behind crashes, sound loss and screen glitches3Clear out junk files and repair common Windows errorsIf Backspace stops behaving correctly only after you connect over SSH, a mismatch between your terminal’s TERM value and the remote host’s terminfo database is one possible cause. It is not the only one: the key’s emitted character, the tty erase setting, and the application’s own key handling are separate parts of the problem.
First, find out where Backspace fails
Ask whether Backspace also misbehaves in your local terminal, or only after you SSH into a particular host. If it works locally but fails remotely, check the remote session’s terminal type and the host’s terminfo entry. If it fails locally too, the issue may be earlier in the input path.
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Also note the scope: does the problem occur at the shell prompt, or only inside one full-screen program? If shell command-line editing works but a particular application does not, investigate that application’s terminal handling before changing shell-wide settings.
One technical blog describes the symptom as “After SSH-ing into a remote server, Backspace acts like Space,” and notes that arrow, Home, or End keys may also behave unexpectedly. Those are reported symptoms, not proof that terminfo is always at fault. [Ghostty terminfo documentation]
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What TERM and terminfo do
TERM names the terminal type available to programs running in the session. Programs use the terminfo database to look up that terminal’s capabilities and how to interact with it. If the remote host does not have a suitable entry for the value in TERM, terminal-aware programs can misinterpret capabilities or report errors such as “Error opening terminal.” The Linux terminfo manual describes the database and terminal descriptions: terminfo(5).
SSH also carries terminal-related information for a session. The SSH connection protocol defines terminal modes, including VERASE, the erase-character setting: RFC 4254. That setting is distinct from the terminfo description. A correct terminfo entry does not guarantee that the tty’s erase character matches what your Backspace key sends.
Check the remote terminal type and entry
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Connect to the affected host and inspect the terminal type with
echo "$TERM". The value identifies the terminal type the remote programs are being told to expect.Special offer. See more information about Outbyte and uninstall instructions. Please review EULA and Privacy policy. -
Check whether the remote system recognizes that value with
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If the entry exists, do not assume the issue is solved: test the same key in the shell and in the affected application. A problem limited to one program points toward that program’s key handling or use of terminal capabilities.
For Ghostty, install its terminfo entry on the remote host
Ghostty documents that it uses xterm-ghostty as its TERM value. When the remote host lacks that entry, Ghostty’s documented installation command is:
infocmp -x xterm-ghostty | ssh YOUR-SERVER -- tic -x -Replace YOUR-SERVER with the SSH destination you normally use. The command exports Ghostty’s local terminfo description, sends it over SSH, and compiles it on the remote host with tic. See the official Ghostty terminfo instructions.
After running it, verify that the entry is available with infocmp xterm-ghostty on the remote host. Depending on permissions and configuration, tic may write to the system terminfo database or to a user-local database such as ~/.terminfo. If the remote lacks tic, or you cannot install the entry where the session can find it, use a compatibility fallback instead.
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Use xterm-256color as a compatibility fallback
Ghostty documents configuring SSH to send TERM=xterm-256color when connecting to a host without the xterm-ghostty entry. This common terminal type can provide a useful set of capabilities, but it is not identical to Ghostty’s own entry: Ghostty-specific features, including colored and styled underlines, may not work.
Ghostty’s example uses the SSH SetEnv option. OpenSSH requires version 8.7 or newer for this option. Follow Ghostty’s current terminfo guidance for the configuration example, and scope the setting to the host that needs the fallback rather than changing terminal behavior globally. Prefer installing the matching entry when you need Ghostty’s full terminal capabilities.
Ghostty’s +ssh wrapper
Ghostty’s documentation says its +ssh wrapper can attempt to install the terminal entry automatically. Installation is enabled by default for that wrapper; if it fails—for example, because tic is unavailable remotely—it falls back to TERM=xterm-256color. Availability depends on the Ghostty version you have installed, so check that version’s documentation before relying on the feature. A shell function wrapper also cannot automatically affect scripts or tools that invoke SSH outside that interactive shell. Details are in the Ghostty feature documentation.
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Check the tty erase character separately
On the remote session, run stty -a and inspect the reported erase setting. The stty manual defines erase CHAR as the character that erases the last character typed: stty(1).
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If the key’s emitted character does not match the tty’s erase setting, line editing can behave unexpectedly even when terminfo is present. Do not copy a universal stty erase value from another setup: conventions differ, and the right setting depends on what the key sends and what the application expects. Identify the mismatch before changing it.
Distinguish Backspace from Delete
Backspace and Delete are not interchangeable in every terminal and application configuration. Debian Policy discusses distinct Backspace and Delete behavior, including the role of stty erase and the terminfo kdch1 capability: Debian Policy, operating system interface. If one key fails while the other works, record which key and which application are involved before changing settings.
Choose a fix that matches the cause
| Approach | What it addresses | Trade-off or requirement |
|---|---|---|
| Install the terminal’s matching terminfo entry | Gives remote applications the description for the terminal type being sent | For Ghostty’s documented method, the remote needs tic and permission or a usable user-local database |
Use xterm-256color as a host-specific fallback |
Provides a common terminal description when the remote lacks xterm-ghostty |
Some Ghostty-specific capabilities may be unavailable; Ghostty documents SetEnv, which needs OpenSSH 8.7 or newer |
| Adjust the tty erase setting | Addresses a mismatch between the key’s emitted character and the tty’s configured erase character | Inspect stty -a first; the correct value depends on the setup |
| Investigate one application’s key handling | Targets failures limited to a particular full-screen program or other application | Changing shell or host-wide terminal settings may not address an application-specific issue |
A practical troubleshooting order
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Compare local behavior with behavior after SSH, and identify whether the failure affects the shell, one application, or multiple programs.
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On the remote host, inspect
TERMand tryinfocmp "$TERM"to check for a matching terminfo entry.Best Value
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If the entry is missing, install the matching terminal description when possible. For Ghostty, use its documented
infocmp -xand remotetic -x -method. -
If installation is not practical, use a host-specific compatible terminal type, understanding that it may omit terminal-specific features.
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If the entry is present or the failure remains, inspect
stty -aand test Backspace and Delete separately in the affected context.Windows Errors? Fix Them Before They Spread
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